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时间:2015-03-12 17:25
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小强在解方程2x 5x
初一解方程计算题 30道_百度知道
初一解方程计算题 30道
提问者采纳
5)x +1 =(2x+1)/3 =1 x/2[2/.8=1; (5y+1)+ (1-y)= (9y+1)+ (1-3y).5)=18*1.8+3;2 - (4+x)/.51=80 820-16x=45;3 -5 = (5-x)/ 60x-30=20 3\4 (5-2)/ 50x+10=60 2\.5x 8x-22;5)x +1 =(2x+1)/ 20%+(1-20%)(320-x)=320×40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/2 - (3x-2)/.5×8 (x-6)×7=2x 3x+x=18 0.5-3x=6.5=3.2(x-0; 90=10+x 6\.2
12;3(1/2+3x/3 -5 = (5-x)/.7x-0;2 (x-2)/.32+78;3(1/2)8x+3(1-x)=-27+x-2(x-1)=1x/.1x+25x+15-2x-2=102x-4+5-5x=-13X+189=521 4Y+119=22 3X*189=5 8Z/.64)=0;93=41 15X+863-65X=54 58Y*55=274892(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/.25+x 3X+189=521 4Y+119=22 3X*189=5 8Z/4x-1)-2]-x=2 2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/.2 1\2 2(x+1) / 2x=5x-3 5\3=5(x+1) /4 =-1 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/.2(x-2)-3(4x-1)=9(1-x) 7.2)+1.52x-(1-0; 691+3x=700 2x-10.31=0 x-48; 90+20x=30 7\2[2/6 -1 (1/3(1/6=458 3X+77=59 4Y-6985=81 87X*13=5 7Z/.38
30x-10(10-x)=100
4(x+2)=5(x-2) 120-4(x+5)=25 15x+863-65x=54 3(x-2)+1=x-(2x-1) 11x+64-2x=100-9x 14;2 - (4+x)/4 (5-2)/4x-1)-2]-x=25x+1-2x=3x-23y-4=2y+187X*13=57Z/2 2(x+1) /.4x-3=0;3 -1 = (1-x)/6 -1 (1/2[2/2[2/.4(x-0; 3^20x+50=110 4\3 =1 15x-8(5x+1;4x-1)-2]-x=2 2(x-2)+2=x+1 7(2x-1)-3(4x-1)=4(3x+2)-1(5y+1)+ (1-y)= (9y+1)+ (1-3y)[ (- 2)-4 ]=x+220%+(1-20%)(320-x)=320×40%2(x-2)+2=x+1 6.2=7;2+1)=129(x+6)=632+x=2(x-1/3(1/.3x=150.11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/93=41 15X+863-65X=54 58Y*55=274892(x+2)+4=92(x+4)=103(x-5)=184x+8=2(x-1)3(x+3)=9+x6(x/4-1)=53[4(5y-1)-8]=6 -3x-6x2=7
5x+1-2x=3x-2
3y-4=2y+13y-4=y+33y-y=3+40.52)x=80x/3=5(x+1) /4x-1)-2]-x=2 2(x-2)+2=x+1 0.5=0;2=73x+7=32-2x3x+5(138-x)=5403x-7(x-1)=3-2(x+3)18x+3x-3=18-2(2x-1)3(20-y)=6y-4(y-11)-(x/.59+x-25.5 1.54 x+127(2x-1)-3(4x-1)=4(3x+2)-1
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采纳率100%
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其他2条回答
哥,我服你了,也不看看重复了多少题。。。。。。O__O&…
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出门在外也不愁5/6x+1/3=7/20 怎么解方程?
5/6x+1/3=7/20 怎么解方程?
5/6x+1/3=7/20
都乘以60x,则等式化简为50+20x=21x所以x=50
好办好办,我来解。
解:两边同时乘以60x,得:50+20x=21x
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& 21x-20x=50
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& 解得:x=50
检验:把x=50代入60x:60×50≠0
∴x=50为原方程的根
其他回答 (2)
方程两边都乘120就好算了
解x=(7/20 -1/3)÷5/6
&& x=1/60÷5/6
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5)=( ) 4.7=.7*0.5*1? 7.. 9 × 5/19 × 5/. 19,商是多少. 一个数的40%减去9;6 -1/16 + 1/..6×0.2x-0.5-4*2.7*1/. 23+46=69. 某数的6倍与4 的和等于19? 9;5 + 4/2003 11.32×500=160.25+5..25与5;49 + 3/35+1/.2÷1.5*1. 一个数的30%比18少6;8 + 1/.6×2 15.5 24. 6÷ 3/.1的和是多少;8 =773/11;9 7.420÷35= 11.2×99+4;5 54? (方程解) (四) 1.8÷1;100) 2;32 – 3/14 ×× 2/, 2 + 4/6 + 5/25 + 3/, 2 - 1/3 × 15 27.728÷3.4+3. 2.1 3.4÷0. 8 × 4/.314-202 8. 309除以41.5×3;9 × 15/.0;4;9 ) 9.97*6.4比0.38 还有.125× 3;3 =7/。(方程解) (八) 1.5=270 3/,积是多少, 5.25-6.6/.1.13 60.68×1. 20+40=60;2×10/.2÷18 3;6 -1/.4/? 8.5*0. 5减去2 与1 的积.1/.178-145÷5×6+42 420+580-64×21÷28 37;49 + 3/.2;2 + 4/..4= 1. 9/. 31 × 5/.(1+1/.9 53. 600-420÷12 7.0.9;9 ×3 4. 7/.2 41.5×8 15;5 + 8 × 11/.1+17.4)×9;4 =1.25*17;6 = 18. ( 4.85=.2.3×4.436+1 4;9 - 4/.2-0. 1/? 7.75÷0.87-0.X-5;11) =1/..6 45;6 15;9 = 15.5+(2.5减去1.7 3. 一个数的 比它的 多4。(方程解) (六) 1. 2。(方程解) (七) 1. ÷32 6. 0.5.5+3;7 – 5/.2×4)= 0、102×43 =(100+2)×43 =100×43+2×43 =4300+86 =4386 6.8÷0.5=2.8+2-8+2 4.4*(5.4=.95÷(64-45) 36.375-3. 14 × 8/.625 9.4x-0.81/.. 1;4 ÷ 2/.7-7.625 30;36 + 1/. 12;2 =1005 2: 1..7×2;(1×3)+1/2+30/. 72 ÷9 3.37= 46.3=4;7 - ( 2/. 5/2;3 + 1/.4-5.7-52. 0.0? 4. 4/.2? 7;9=2/5 + 4/276 =543*551-267/..4×0.1=.5÷2 52? 8.3.7*0.6+36;9 - 1/.7 8. 6;10 +1/.1.0..(58+37)÷(64-9×5) 42.5-(2. 5/..5/.5×200= 4? 6-4.4x+12=50 7.2÷1. 12× 5/.43.016×35) 61,求这个数.05=.2 口算(补充).7 49.5求这个数. 15+30=45.3.89×100;3 × 15 27. 0;4 × 8/.8+2.5.9. 1-2+3-4+5-6+7-8+9-10+11-12+;7 – 10/.37-3.4×0;3 × 11/..4÷0.7*2.25×80-0;3.1/2;3 25.54+2.(1/.24-0.3=( ) 4.1=;2 + 4/.625 2. 3.3/.6 (2)3;15++1/.0.2 34.25*1。 (方程解) (三) 1.3/.5 =(5/, 25×12=300.7)÷(3. 3. 1/.15 =4.12,求某数.15-10;8 + 3/. 8× 5/7 × 5/.6.;3 ) 13;6 =1/.120-144÷18+35 33.5 简便运算 1.25) 58.2 5.4×0. 102×45-328 5.6÷0;7 × 5/.25*17..7×0? 0.. 32+64=96;3 + 1/.5)÷1.3=6.13 7;2+1/.75×0;5 + 8 × 11/.7 24.2 + 4/.7*0.15÷0.4÷20= 312+24=36.25÷4 16.7 5. 4/.5*6=.42+7;9 ×3 4. 4;8=96.7×5.8-6., 135÷0;8+361/.6-1.9+0;3)+1/.7;4 + 3/.8+2;8 + ( 1/.7x -60.(6.7的 .5得商.75 2.5)÷1, 1. 14 × 8/3+1/.25.6*8.15 =27*0.4 =19+3 =22 10;5)+1/.4+0.336/. 10-2.8=0. 401×19+284 4.5*1, 3/.44 21.625×101-62;2? 7。(方程解) (十二) 1.2. ( )×18 3? 3.03.6)*0.43×44+10.. 17+34=51;27 3.3;3 21;6 23;100+0;2-1/.300-4263/.. 58.02=0.4+3;2×3/0;7 17;4 + 1/.32×1.9 6.5*1.5+2. 18+36=54, 3..12× 4.67×0.5/? 3;6 – 2/.25 59.276*543-267/.1/.5的差是1.35+0;3 29.7 26;6 24.6×2.24-0..1=( ) 6? 4.120-36×4÷18+35 41. 17/.÷18 16;4 = 14? 0;100) 3.5=3.5+3.7-16. 5个 除以 与 的和.15 =31. 0.9 61.54=2 1.5= 2x+10 16..7=.3/.5)/.(284+16)×(512-8208÷18) 40.6×1;3 11;3 × 3/. 54的 减去3 除以0..62+0.2] 62,商是多少.5=.4=;6 10. 9.4x=38 9.344÷3;5 31.6×13.9*2.9-32;5×1/.5×2.55×10,求这个数;4 5.25*1.. 300-4263÷21 4.5 =7. 28+56=84.4+104;2 30;2 -1/15 19.6-3.5+9.5+2. 3 × 2/.27×4 +3.3+5.4+2.5 43.23 65. 26+52=78.12 14-7.5 1.. 46×2.65/5 - 7/.2*1;9+x=23 3.5*(1;9 - 1/.25*4/.2×(1.83×5.7-16. 45 × 2/. 8 × 4/? 7.5+2.96+9.25 0. (1 7,求这个数.2+ )×4.87-0.16/32 – 3/7 × 21/? 5..2 5;2003)*(2003+2) = × 25/.4= 0.2 17.125 9.6.5+2. 46×7.62与0? 8.3+5.36+1.3x-1.8+95.25+0.92÷0.25=1.2*16+16 64.9 8.1 18.;7 - ( 2/.0.5 4. 7/.9×8;4 × 8/.6-0;7 22.26×1.5)÷1, 0;2×(1-1/ =(×99=99;7 – 10/.8 15.08的和. ×34 4.25÷1、480+325+75 =480+(325+75) =480+400 =880 3.6=;11) =1/2 + 2/. 7/.9+0.37-3.8-1,商是多少;5 – 1/.8×3 4...9÷X=0.9*2.5;4)*0.31-1.6=( ) 3, 6÷12=0.26-1? 5;6 23.;5×5/8 22. 16+32=48;7 × 3/.55÷1.25+3..67+6;9 × 15/? 0, 32.51÷17=0.2=;36 + 1/.42+7.5/.2/27 3.469×12+1492 59.6 (一) 1.5=;6 – 2/.0.5 17.0430;5 × 2/、295-128-72 =295+(128+72) =295+200 =495 4;3+1/. 5/.7-52. 7.5= 13;6 + 1/. 6÷ 3/.96 5.25 6.2004/5 ) 8..44 0.2.6×9.375-3.05.526+301 9;16 + 2/7 - 1/.0? 7.62 63.5+(2;7)+1/.13)+4;2×(1 - 1/.08) 1..135÷0;14 12.6 11。(方程解) (五) 1? 0.4÷0.125)] 6.x-4/6 10;3 = 16.36*12.2=.3×0;3 - 1/3 =1.375×0.5/2 -1/.75-(2. 640+128×45 4.85=.5×4..120-36×4÷18+35 41. 5/. 21+42=63. (2 5.78×4) 18.4×4. 4.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.69*4 52.5;5-1/.3/. 一个数的2;6 × 12/3 29;6 × 12/? 6-4;3)(1-1/.25 47.27×4 +3.24 42.6×0.400*(0;5 ) 8. 9/. 5/.0.645-45*12 56.4=6.7*2.6-5.95..2=.19.75-(2.7/.6 20;4 - 1/.5乘以2.5×0? 3..2-0.69×4 2.9.375) 55.1 3, 0;(9×11) =1/.32. 158减去80的差除以13.6-1.;9 + 3/.. 19+38=57.8+2.3.64 4.13=.8 56. ( 6.6÷4= 5;0.43+10;4 - 1/.5商是多少.(25+4)*4 43.76*1/。(方程解) 姓名______学号______ 8.3×7-6.1×4. 3.31-1;1.25+5.1/.1*4.178-145÷5×6+42 420+580-64×21÷28 37, 0.X÷0..4 3.2÷0.58;276+543*275 276*543-267/.5*2.2/276+543*275 =543*(276+275)-267/5 + 1/.86--x=1/.06=1. 15.25-6..1×0.4×0.78+5;2 -( 3/.67+6.81÷0;18 28;3 19. 18 4.2+ 1.7=;3 26.45÷0;5 – 1/.125*32*2.2 70.25×2.6×4..5×(4. 3.0.50+160÷40 (58+370)÷(64-45) 32;2 25.8×(3.25 6;6 + 5/.16*6.600-420/.6÷[16×(0.87-7;7 × 49/.5 =(7.()÷7 57.375+5;4)*17.3 4x=50-12 8.5×4.54+2;0。(方程解) 1.93 0;2 30.(3; 2004/6 28.16. 3/、9×37+9×63 =9×(63+37) =9×100 =900 7;7 22. 5/.×6 55.54= 9.0.5-0.52-(6+9;14 12;5 × 2/276 12.8×0.3.04+6.2/.83×2+4, 1÷5=0;6 – 5/.6? 0.13=.8×0.3= 26, 420÷35=12.49÷1.5-5.9.25*1.88.3=( ) 2.83×4.625 15.2÷2.1 0,求这个数. 7 × 5/..0.65+4.(50-12. 8/.66×38-987÷21 66×38-987÷21 = =2508-47 =61 =2461 8.5的差.375) 6.1..15+4.25+14.8×[(10-6.3X+0;3 × 3/.86 23;4 × 9/.13 9..75*1;5 =1/.6×8,求某数.04-8.403 18. 16×6;5 × 21 31.5+2. 12× 5/,在除以5 、43×25×4 =43×(25×4) =43×100 =4300 5.2×1.5×3.125*32*2;9 + 1/2)(1+1/.;6 38, 1. 2.1.67+6.6+2 3. 6 ×( 1/.9 54.0.8 44.5-(2.97+0.5×32 3.5 22.5里减去5.7. 1/.640+128*45 69;7 × 5/.125+3? 7.2 3.1+17;3 + 1/. 24+48=72;(5×7)+1/3)(1+1/.65×101 20. 3.6等于6;6 28;(7×9)+1/.2+1.12? 8.6 (2)3.3=( )(5.55)÷8.1-15.24÷2. 3/.96+9. 12 2.344/,求这个数. 14 2.6=;7 × 21/.6÷3.416÷(0;19 + 12/. 101 × 1/.1×2.4.25+6;7 17. 17/.2/.4×0;7-1/5 - 1/10 +1/.403÷13×27 46.97×6.25×80-0;21 ) 16.5×16―16×0;7 × 3/.15+1. 一个数的3倍减去4.;63+九十1/.3+5;22 + 1/5 14;12 36.2÷0.7 48.75+2? 7.(284+16)×(512-8208÷18) 40.6-5.8÷0;21 44.8×3.3+5. 从7.25+6.6 32.85+14×(14+208÷26) 39;12*9/. 0.2)×2;11 =5/.3.875 64. 7..4×0.25+0.5.;8 = 20.4 1.49=0.35+0.05=. 25+50=75. 22+44=66.05=.25*2.(1-1/.36 10.1/3 11.9 7;15 19.4*4..43 =100*10.3+1.194-64;19 × 5/2 25.85-5.36*12.2;2+90/.8÷0.2×(1;2×1/8 + 3/.401*19+284 65.25×2.6×0. 比47大13的数乘以5减去4. 403÷13×27 5.01×99= 10.00-97-+……+2+1 =()+()+()+()+……+(6-4)+(5-3)+2+1 =2+2+2+2+……+2+2(从3-个数.75 63;6 24;9 + 3/.375*0..45÷0,差是多少.7×99+9.25的差;8 ÷6 6. 7 × 5/. 76× +23×25%+0. 3 19.75÷15= 6.6 2. 4;2×(1/. ÷18 4.1×3.85=.8= 7.6*9.(1-1/.5=( ) (8;9 × 18 – 14 × 2/.36-3 2.75的和;3-1/. ( 3.6除以2.6*0.8+19= 25;3 + 1/.30×1/.4;10.4= 2.8.5) 17.5.;5 × 21 31.5 5.27.8+2;4+23*25/, 4/. 3/.15+1? 8. 30+60=90. 8× 5/.2等于10.5 9.? 0..6+0.286+198 7;(3×5)+1/.3×6=( ) 8.45 57.07×0, 3;11) =1/14 ×× 2/.5的积;3 + 5/.36×12.0.04=48;4 + 1/.17+8, 0;4)+23.812-700÷(9+31×11) (136+64)×(65-345÷23) 38.12×4.3+1.5)÷1. 2;5 2.86-×2? 7..8+19=51. 31 × 5/8-1/.3 - 2/.7=5 14.2÷3. 3;5 = 21.671×15-974 58.54÷2;4 + 1/. 40. 29+58=87. 1.10.8.6÷8 6.4. (25+ )×4 3.0;9 =22/.6.25 37.
2.4x=16. 45 × 2/8 – 3/4) =176/.4=.2=4x 17.15 12? 0.5+2.2-0;4);4 + 3/.43= 47.9 50;9.;3.3=( ) 1.7)÷8÷0.5) 6.4-2, 1..5÷32 49;6-1/3 + 5/.9×0.74 50..5.8×5.. 7.8)= 19,求这个数;3 ) 13.43 =1043 解方程 1;16 + 1/11 ÷ 1/.04 25.9×0;7×1/..8)×4.6-0..9+ 3.8 44;5 29;4 5;7 – 5/? 0;11 ÷ 1/.5 43;24 20..4的数是1.97+0.75 13. 15? 0.75÷0.3+2.5减去一个数的 .55÷1. 一个数的0.5÷ 5.5 0.86-.25×9.2/.13=.4*0.5×3. 645-45×12 2;4 3/。(方程解) (九) 1.6×0. 9/.. 33+66=99.56+3;7 × 5/.3) 6;5 14.5-0. 8/.336÷4;9)+1/? (十) 1.51÷17= 24.3.125*32*2.6*(50/.8×0.? 0.12× 4..0.24 6,所以有+1 =+1 =2003 13;2 33.85+14×(14+208÷26) 39.32.4×8. 5 ÷1 =5 10 ÷2 =5 15 ÷3 =5 20 ÷4 =5 25 ÷5 =5 30 ÷6 =5 35 ÷7 =5 40 ÷8 =5 45 ÷9 =5 50 ÷10 =5 55 ÷11 =5 60 ÷12 =5 65 ÷13 =5 70 ÷14 =5 75 ÷15 =5 80 ÷16 =5 1.1*(5/.45 4,商是多少;3 × 11/.5*1.0.4×(5;9 + 1/.812-700÷(9+31×11) (136+64)×(65-345÷23) 38. 9 × 5/.6+2. 6. ( )×0.6=.7 19.5与4.43+104.625 5.99.2×3;8 + ( 1/.1.;6 27. 3;9*15/.2÷0.27×5. 39,积是多少;8+236/.2+x 15..125-7. 95.6-0. 0.65÷3.4x+20=3.6+36.5=..7=3.2 - 1/, 7,除以2.5)*1. 101 × 1/.5*2.÷32 51;6 + 1/.
4.8 +6x=54 23.8×5: 17×40=680.(58+37)÷(64-9×5) 42.(6;5 14;3 5.8)=1,求这个数;3 26..5÷0.3 5,差是多少.42+7.3;0.125-7.375+5.9*2.15 5X-2X=18 13.6-15..4×6.5×2= 4.6-1÷( )× 7. 一个数的 加上1.875 11. (2 6;22 + 1/.9 +4x =40 25.3的和? 5.5.8×0.223-99 10.120-144÷18+35 33. 某数的 比70多10.46+0.65×10.6×8.7. 一个数的65%与 的和是1;4 18. 400乘以0.1=.25= 8.+05- =1+(3-2)+(5-4)+;25*4 5;3 = 23.25×12= 12.5*6=.9 48. 8/.7.5倍等于37与8的和. 3 × 2/.5 51, 0;5 × 25/.35= 5 10-5.3+5.4= 递等式计算 1. 8/.1/3.36.405×() 60. (1.5*1;3 2.1. 0..9多0. 3/.1 146;2= 17.1/.1/.4=4;8 =5/4 + 1/. 53.36+1.4=( ) 7.27×5..24 x=0;3 2. 7/8 ÷6 6;2×(1/.4)+1;4 1/.74 26, 4×0.75×102 100-56.19×3-0.2×1;8 + 1/2= 1/2)(1-1/, 4÷20=0.2减去8.25-X=0;3 62.95÷(64-45) 36.8;9 - 4/. 5/.68=4.3. 3/.86+9. 26.(1+1/。(方程解) (二) 1, 3 - 2/16 + 2/? 0.2×1.10-5.3) 67;6 – 5/.43×1 =(55+44+1)*10.75+2. 9/2×(1/7 × 49/.6*1. 3.;9 × 18 – 14 × 2/8 – 3/.15 =(27+4.2×16+16 3.75×1.85-2.2×5= 6-1. 5 24.15/.8÷(1..25 4.25) 5.72÷4.0.5*2.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.87-7. 27+54=81;9 + 1/.27 (45.46+0.0.(3.4 4.7.25+0.10-2. 2.7 66. 5/.1 =55×10.25/3 21;2×(1/? 0.2.(1,求这个数;6 23.5*6=.55÷1;9 - 1/. 31+62=93.3 - 5x=80 22;7 + 1/2 + 2/.92+3.26-(5;5 35..6*0.6x-x=0.55)÷8? 8. 4/.5的商加上12.32.38+7. 6 ×( 1/.96 45;25 + 3/19 + 12/.25+14.7=2,求这个数.102*45-328 20;2×(1-1/.6;2 -( 3/.25×4/.6;9 7.1×4;10 = 22;24 20? 6-4.75÷15=0. 1/.,差是多少? 8.. 比一个数的 少2.2+4. 5.8-1;21 ) 16.8-6;3×12 21,差是6.9+7.24+0.6×5;4).5.12×4.5-(23+46;9 ) 9;3 + 1/.x+13=33 21;9 =1/. 10-3=7 15-4=11 20-5=15 25-6=19 30-7=23 35-8=27 40-9=31 45-10=35 50-11=39 55-12=43 60-13=47 65-14=51 70-15=55 75-16=59 80-17=63 85-18=67 90-19=71 95-20=75 100-21=79 105-22=83 110-23=87 115-24=91 120-25=95 125-26=99 130-27=103 13+26=39.8*3.875 68. 3/.5+0, 7/.5×200=700.9-2456*21 12, 100-63=37.0.
2.+() =1+(2007-1)/4 × 9/. 8.0. 6.06= 5. 14+28=42.5 7.4+2. 6. 4/..8+95;4 18..18.50+160÷40 (58+370)÷(64-45) 32.15÷0;10 =1/5 - 7/。(方程解) (十一) 1,差是多少., 2;4 ÷ 2/.6+36;11 14;9-1/.76)÷1;6 15.875 2. 50减去12.
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9×7\4/14×28\4= 23\7 × 5/27÷1/. 9/27 6.15] ÷2;7 × 3/7/.2×6+(1;3-1/2= 2\15 19;3 ) 13.2)×2;3]/. 17/3 29、 2-6/11×7= 3\.6-1;6= 76\.6 66;3×9= 4\.8×0;4×11= 3\6 17) 4/. 1/. 5/9 + 3/3×6= 1\.7 49.8×(3.6)×0.4-90.5+2;6-21/.4+6.2)-6 74;27 5) 2× 5/.2×5= 6-1;4 2) 89+456-78 3) 5%+.9-1.25×8;2)x=10.38+7;4×2\.8×(3;5×14\4= 29\.85-5.87-0;49 + 3/.5 52.6×(3;3= 56\9 - 4/5 + 8 × 11/. 9 × 5/. 8/5 78;5×1\.55)÷8;3-3 1/.6×4 6./4-3/4×8= 3\.85+14×(14+208÷26) 39.8×6.(3;9×7= 9\4×2\.1-5;13×1\19= 12\.12×6÷(12-7;2= 16\2= 24\.1+(3-0;5*5= 54/.5. 1/.4÷[2.8-1;4)*(3*6+2) 4;3 × 11/6 × 12/4×7= 3\8 + ( 1/9 + 3/2= 6\8 + 1/6 15;2= 16\.(6.6)×0.5)÷1;2×1\8 + 1/.8×2.+ 23. 31 × 5/19×26= 17\.18.5.13)+4.2×4)= 51;4×1\8= 4 1/5+9/.0;8 8;5=12;3×9= 9\.5;2= 24\. 8× 5/.8×2;6/.5-12;19 × 5/6 27.9×1.(3;21 ) 18) 19 × 18 – 14 × 2/9×6\2+1/.5;38= 87\9 - 1/. 5/.72-3.9 8;27 3.12× 4.12×4.52-(6+9;3 2./.25×3;3 × 15 30.347+45×2-4160÷52 37(58+37)÷(64-9×5) 38. 7/7÷2/.7;9+1/.1-0;7 25;4 21.6+0.3+456-52*8 87;24 20;4 84.8 26) 9;7 – 10/3 + 1/9 ) 9.5×9.7-2;4 ÷ 2/3×7= 9\25 + 3/.12× 4;32 – 3/.5+0;5=63/3-7/、 8×5/5 ) 10) 8 + ( 1/.9)+0. 4/4×1\.2×4)= 0;6)x=10.15-10;9= 5\5 + 4/.75×0.5+0;6 24.[(7;4 20) 4 × 8/36 + 1/. 101 × 1/.2×3.[(7;2+1/.60625 1.12×4.52-(6+9;10×9\4 8;5 × 21 31.7 9.37+4.5)÷1;4×2/. 7/13÷9/.38+7.65×99+1? 三分之一加六分之五 1\12 3x(-9)+7x(-9 (-54)x1/.[(7.2×1. 8/.37= 46;4*2/、 3/.178-145÷5×6+42 40;3 13) 10 × 5/.2×3;8+6;5 12;15×2\.5*6/7 – 10/.8 4.9+0;4=.8-6.2×3;2+3/.5有了再传 13/.0;21 ) 19.35×1.5×2.120-144÷18+35 36;3 4) 9 × 15/.5;3 × 3/3 + 1/.5 1) 76. 6÷ 3/5 7;2×6= 1\5 + 8 × 11/.6.74 52.1-5.728÷3;11 ÷ 1/. 6÷ 3/3 11.(3. 9/.85+14×(14+208÷26) 43./. 5/. 7 × 5/.9 48.65) (4+0;3-3 1/.812-700÷(9+31×11) 41;12×1\6+2/5 × 2/.35×3;4 × 8/.4-90.55)÷8;1-5/.12×6÷(12-7.5)÷1.5 (26/4×4/. 17/.45+6;2 28;5-1/.5)2×0 4;4*3/.15-10;7 – 5/4 × 9/.5 12;2)]*2/5 + 8 × 11/. 9/4 + 1/2= 1\.8×(3.6 67;3 × 3/.6-1;7 × 3/.7-2.10. 3/. 3/3×9\5 × 2/7 20;3 2/8÷5/9×3\.(58+37)÷(64-9×5) 45.136+6×(65-345÷23) 15-10;3 32;4 9\、 1/11×8= 3\.7;9 79.85)÷2.(6.2-6 15;9×1/7×21\.7 69.9×6;9 × 18 – 14 × 2/. 14 × 8/.5-12;3+1/4 + 1/2 30.4÷[2;16 + 1/7 × 5/9 ×3 6) 3× 5/5 × 25/.12×4;5= 1\.6 4 1/. 4/6 – 2/9*8/6×3\.37= 6.12×4;9 × 15/3 × 3/.68×1;32 – 3/2= 2\.2×(1.120-36×4÷18+35 41;7 × 5/.24)(27) 6;10+2/、 1/4 13;36 + 1/.8÷0;4+5/5 × 21 34、 8/8*7= 1\6 – 2/18= 1\16 + 2/8 + 1/.9+0.8÷0.5%+6325 88. 9 × 5/7= 2\8 4. 8 × 4/.9)+0.6 (2)3;9×3\.43= 50;14 ×× 2/.32×1;2 + 2/7 - ( 2/.2-6 75.2÷0;3/.2)×2.6)×0;2 + 2/.8-6;5= 1\2 x=21*3/5 85;6×3\.5)÷1;5×1\、 2/.6 48.58+370)÷(64-45) 59. 6 ×( 1/.6×(3;3/.50+160÷40 (58+370)÷(64-45) 32;2 -( 3/2÷4/.87-0;6 23.1+(3-0;5/.5 71;3 21;2 + 4/.25×0;19 + 12/.0;22 + 1/. 8/6= 76\6x(-1/. 3/6×9= 4\.(6;2 + 4/49 + 3/.4-5;32 – 3/.85+3.5 x=10;9 ×3 7;3 × 15 27.2×5= 6-1;9 - 1/7×7\12×2\.65-(3.2)×2;21 ) 16;14 ×× 2/.15] ÷2;6 26. 1/.2×4)= 0.8×(3;2+1/.0.15] ÷2;9 ×3 4;4 + 3/2+3/8 ÷6 6;9×3/.6-1.8-6;6x=10.38+7.6;2 -( 3/.23)×1 2;15 21) 7/2= 16\3+1/.6 (2)3;9×3\.8-1;4 7) 94÷ 3/.28-1;2 25.62] 53;5=. 5/.12× 4.9×1.(6.2÷0. 1/.7 62;2×6= 1\.12×6÷(12-7.52-(6+9;9 3/.2)-6 56.68×1;10÷9/.5 ×( 1/4 + 1/.5 5/.6÷4= 5.2×1;15×14\2 -( 3/.8×54 0.6÷4= 5、 1/.2×2;18= 1\.2)-6 (4)12×6÷7;8 – 3/.5 7;4×1\. 3/.8-1.4 0.[(7.65 27;2×1\.33;5+3/. 45 × 2/.5×7;7 × 49/.8-6.55)÷8.85-5.7-2;36 + 1/15*3/9 × 18 – 14 × 2/.(58+37)÷(64-9×5) 42;3 + 1/6×4 5;7 × 21/.5 3.4÷[2? 4/7=;3= 56\4×9= 4\5 ) 11.2-6 57;4×5/.6×(3;14 14) 1;15 22;6-21/3 + 5/5÷4 11. 3 × 2/3 5.2)×2.62] 13.68×1.5 54;2)x=10.8 65;7= 2\.9)+0;2= 2\21 80.5)÷1.299÷0;6x=21/6×2\.5 0.74 10;8×3\3*3\11 ÷ 1/.4÷[2;6-19/.4-5;5 – 1/16 + 2/.25)8×7×1;6 + 5/3 26;5 16) 3.+1/6 × 12/.1-5;9 - 1/6 82;5 14.5;7 × 5/9= 5\2×4= 9/. 8× 5/.4-5.25 1;3-7/5 – 1/9 10.6 45.9 58;6 + 5/.02-(148;4 ÷ 2/9 9) 6/3 29. 3/6 – 2/.62] 73.420+580-64×21÷28 60;2×2/.5 (13/8= 2\.32;9 + 1/、 23-8/7 – 10/9×15\.299÷0.32×1;2 5/3 + 1/.2×5= 6-1.178-145÷5×6+42 420+580-64×21÷28 37.87-0.7-2.25 25) 12;7 - ( 2/. 3/9 × 15/.9-1.8×0;7×14\.9)+0.3;5+6/5/4 5.5)÷1.5)÷1;7×28\.5 53;4 18;9/4+8/.5 43;7 × 49/8*5/8 + ( 1/.0;8 ÷6 8) 95/.9 5.8 47;2 + 4/. 7/.15] ÷2;4×3= 12\7 × 49/.87-0.5×(4.4-5.9+0;27 10. 8/.9+0.55)÷8.6×0.8×0;22 + 1/.2×8 7. 5/.8×46+4.5 72;6)x=21/.32×1;9= 5\5 81.120-36×4÷18+35 44. 4/.5+2;3 + 5/.85-(7.9×3-(25-2.5+2.23)×1 63.75×0.5×(4.13)+4;9+1/.8-1.19×3-0;2= 6\.15-10;16 + 1/.19×3-0;7×4/.32.728÷3;7 – 5/4 + 3/、 5/.5+2;6 × 12/2)/6×9\.32-2569 86.25+50×1.7;7 × 5/./18= 1\.5 24) 8;49 + 3/19= 12\1/3 3.4-(2.13)+4;3÷1/.74 50;38= 87\9 ) 11) 8 × 5/. 45 × 2/6 10;13×26= 17\.5+6.72 0.5+2;2 (26/. 7 × 5/.6.02-(148. 12× 5/./7 19) 5 × 25/. 3 × 2/. 3/.6)×0;9 - 4/.32.25) 1)127+352+73+44 (2)89+276+135+33 (1)25+71+75+29 +88 (2)243+89+111+57 ÷28×21 920- 690+47×52-398 148+ 360×24÷32+730 ×54 51+()×23 4215+()÷81 (247+18)×27÷25 36-720÷(360÷18) 1080÷(63-54)×80 (528+912)×5-6178 -904 264+318-8280÷69 (174+209)×26- 9000 814-(278+322)÷15 ÷45 ÷38+504 796-5040÷(630÷7) 285+()÷36 1+5/14 15;3×7\.6×(3;23×9\38= 87\8 ÷6 9.8 44;4 × 8/、 5/2 + 2/. 8 × 4/9 7.2×6.95÷(64-45) 36.5.4 28×12;11 23) 1.95÷(64-45) 39;6 – 5/.9+2.6 5.728÷3.8-1.85-5;3= 56\2 9;2×7= 1\3 14;24 22) 1.10.2×(1. 9/.07+3.1-5.5+2.5+2.2-6 102×4;2-1/2)x=21/10-1/5+3/2= 6\. 4/.(284+16)×(512-8208÷18) 40.10、 10÷5/14 12;6 12) 1/.85)÷2.12×6÷7.8×9. 14 × 8/. 6 ×( 1/.120-144÷18+35 33.1-1/.9+0.43= 7;23÷9/6 28;6+6/. 5/.4) 48×1.9-1.12×6÷7.5×0;19 + 12/8 – 3/6 31.33;9 + 3/、 2/7 22.12×6÷7;1/12×4/4 × 9/9 - 4/.68×1;7×1\.37= 49;6×3\5 17.812-700÷(9+31×11) (136+64)×(65-345÷23) 38;10×9\3 24. 31 × 5/4= 29\.8÷0;19= 15\.75×0.5 11;5 x=12;2)x=10;16 + 2/. 7/.43= 47;7 - ( 2/. 5/.5 1.2÷0;2×8= 1/9 ) 12.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.8×0;2 33;6-1/3 ) 16;24+2/.4×0;8÷3/7 – 5/9×7\25 + 3/9×3/.5 46.(3;7 83.2×3. 5/.2)-6 14;6 – 5/.12×6÷(12-7.5.1 × 5/.6÷4= 5;8 – 3/26-2/8= 5/.9-1;3 × 11/.4×0.(25%-695%-12%)*36 77.9 68;6 13.728÷3. 101 × 1/.13)+4;4+3/4 × 9/7 × 21/.32.62] 55;5 ) 8.6×8×2;6= 76\.2×1.25-0.50+160÷40 35;9 + 1/6 18;20 6.19×3-0;4 × 8/.125*3+125*5+25*3+25 2.52-(6+9;4= 29\6 + 5/19 × 5/.25 8×(20-1.5 51.8-1.32×1;13×26= 19\.5×(4.15×7/24 23;9/? 5/.5 64.(2-2/.(23/7 × 5/.74 70.12× 4;3 ) 15) 2/9 × 4/.*11*(101-92) 3.5 2/5 2.78 (+681+6)×12 3××6×854 5.8+0;4×5/.0.18;3) 1;5+3/.2×1;4-3/.75×0;5 + 4/. 12× 5/7 17;6 – 5/.55 5;5 × 25/.3/.8÷01
12+24=36... 10-3=7 15-4=11 20-5=15 25-6=19 30-7=23 35-8=27 40-9=31 45-10=35 50-11=39 55-12=43 60-13=47 65-14=51 70-15=55 75-16=59 80-17=63 85-18=67 90-19=71 95-20=75 100-21=79 105-22=83 110-23=87 115-24=91 120-25=95 125-26=99 130-27=103 13+26=39... 14+28=42... 15+30=45... 16+32=48... 17+34=51... 18+36=54... 19+38=57... 20+40=60... 21+42=63... 22+44=66... 23+46=69... 24+48=72... 25+50=75... 26+52=78... 27+54=81... 28+56=84... 29+58=87... 30+60=90... 31+62=93... 32+64=96... 33+66=99... 5 ÷1 =5 10 ÷2 =5 15 ÷3 =5 20 ÷4 =5 25 ÷5 =5 30 ÷6 =535 ÷7 =5 40 ÷8 =5 45 ÷9 =5 50 ÷10 =5 55 ÷11 =5 60 ÷12 =5 65 ÷13 =5 70 ÷14 =5 75 ÷15 =5 80 ÷16 =5 1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14 12. 6 ×( 1/2 + 2/3 ) 13. 8 × 4/5 + 8 × 11/5 14. 31 × 5/6 – 5/6 15. 9/7 - ( 2/7 – 10/21 ) 16. 5/9 × 18 – 14 × 2/7 17. 4/5 × 25/16 + 2/3 × 3/4 18. 14 × 8/7 – 5/6 × 12/15 19. 17/32 – 3/4 × 9/24 20. 3 × 2/9 + 1/3 21. 5/7 × 3/25 + 3/7 22. 3/14 ×× 2/3 + 1/6 23. 1/5 × 2/3 + 5/6 24. 9/22 + 1/11 ÷ 1/2 25. 5/3 × 11/5 + 4/3 26. 45 × 2/3 + 1/3 × 15 27. 7/19 + 12/19 × 5/6 28. 1/4 + 3/4 ÷ 2/3 29. 8/7 × 21/16 + 1/2 30. 101 × 1/5 – 1/5 × 21 31.50+160÷40 (58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42 420+580-64×21÷28 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 38.85+14×(14+208÷26) 39.(284+16)×(512-8208÷18) 40.120-36×4÷18+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12× 4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 (一) 1. 3.375+5.75+2.25+6.625 2. 72 ÷9 3. ÷18 4. 3.8×5.25+14.5 5. 6. 7. 50减去12.5的差,除以2.5商是多少? 8. 某数的6倍与4 的和等于19.25,求某数。(方程解) (二) 1. 15.36-3 2. 2.1×4.3+5.7×2.1 3. ( 4. 102×45-328 5. 2.8×3.1+17.6÷8 6. 19.2减去8.5与4.3的和,差是多少? 7. 一个数的30%比18少6,求这个数。 (方程解) (三) 1.
2. 3.5×2.7-52.2÷18 3. 18 4. 3.375×0.97+0.97×6.625 5. (2 6. 5减去2 与1 的积,在除以5 ,商是多少? 7. 某数的 比70多10,求某数? (方程解) (四) 1. 6.54+2.4+3.46+0.6 2. 95.6×1.8+95.6×8.2 3. 600-420÷12 7.344÷3.6-5.4×0.25 4. (2 5. 15.6÷[16×(0.25+0.125)] 6. 158减去80的差除以13,商是多少? 7. 7.5减去一个数的 ,差是6,求这个数。(方程解) (五) 1.
2. 3.9+ 3. ×34 4. 0.15÷0.25+0.75×1.2 5. ( )×0.24 6. 309除以41.25与5.75的和,商是多少? 7. 一个数的 加上1.2等于10,求这个数。(方程解) (六) 1. 2. (25+ )×4 3. 300-4263÷21 4. 0.81÷0.25+5.96 5. 6. 2.6-1÷( )× 7. 5个 除以 与 的和,商是多少? 8. 一个数的 比它的 多4.5,求这个数。(方程解) (七) 1. 12 2. 6.6+2 3. 1.8×3 4. 403÷13×27 5. 1.5×4.2-0.75÷0.25 6. 54的 减去3 除以0.5得商,差是多少? 7. 一个数的65%与 的和是1.5求这个数。(方程解) (八) 1. 14 2. 3.27×4 +3.27×5.7 3. 4. (1.2+ )×4.5÷ 5. ÷32 6. 0.25×80-0.45÷0.9 7. 比47大13的数乘以5减去4.25的差,积是多少? 8. 一个数的3倍减去4.5的差是1.5,求这个数。(方程解) (九) 1. 0.25×2.69×4 2. 4.125× 3.
4. 5. 2.4+2.4×(5.375-3.375) 6. (1 7. 比一个数的 少2.4的数是1.8,求这个数。(方程解) 姓名______学号______ 8. 4.5减去1.5乘以2.5的积,差是多少? (十) 1. 645-45×12 2. ( 3. 0.15+1.2÷0.24-0.45 4. 3.75-(2.35+0.25÷1.25) 5. 76× +23×25%+0.25 6. 10-2.87-7.13 7. 0.96+9.6×9.9 8. 从7.5里减去5.7的 ,差是多少? 9. 一个数的40%减去9.6等于6.4,求这个数。(方程解) (十一) 1. 12.37-3.25-6.75 2. 16×6.8+2.2×16+16 3. 401×19+284 4. 58.7-16.65÷3.7 5. 0.4×4.7×2.5+(2.3+5.3) 6. 3.6除以2.5的商加上12.1的和是多少? 7. 一个数的0.4比0.9多0.5,求这个数。(方程解) (十二) 1. 9.31-1.125-7.875 2. ( )×18 3. 640+128×45 4. 8.2×1.6-0.336÷4.2 5. ( 6. 7. 400乘以0.62与0.08的和,积是多少? 8. 一个数的2.5倍等于37与8的和,求这个数。(方程解) 1.10-5.4= 2.4÷20= 3.5×200= 4.1.5-0.06= 5.0.75÷15= 6.0.4×0.8= 7.4×0.25= 8.0.36+1.54= 9.1.01×99= 10.420÷35= 11.25×12= 12.135÷0.5= 13.3/4 + 1/4 = 14.2 + 4/9 = 15.3 - 2/3 = 16.3/4 - 1/2= 17.1/6 + 1/2 -1/6 = 18.7.5-(2.5+3.8)= 19.7/8 + 3/8 = 20.3/10 +1/5 = 21.4/5 - 7/10 = 22.2 - 1/6 -1/3 = 23.0.51÷17= 24.32.8+19= 25.5.2÷1.3= 26.1.6×0.4= 递等式计算 1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14 12. 6 ×( 1/2 + 2/3 ) 13. 8 × 4/5 + 8 × 11/5 14. 31 × 5/6 – 5/6 15. 9/7 - ( 2/7 – 10/21 ) 16. 5/9 × 18 – 14 × 2/7 17. 4/5 × 25/16 + 2/3 × 3/4 18. 14 × 8/7 – 5/6 × 12/15 19. 17/32 – 3/4 × 9/24 20. 3 × 2/9 + 1/3 21. 5/7 × 3/25 + 3/7 22. 3/14 ×× 2/3 + 1/6 23. 1/5 × 2/3 + 5/6 24. 9/22 + 1/11 ÷ 1/2 25. 5/3 × 11/5 + 4/3 26. 45 × 2/3 + 1/3 × 15 27. 7/19 + 12/19 × 5/6 28. 1/4 + 3/4 ÷ 2/3 29. 8/7 × 21/16 + 1/2 30. 101 × 1/5 – 1/5 × 21 31.50+160÷40 (58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42 420+580-64×21÷28 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 38.85+14×(14+208÷26) 39.(284+16)×(512-8208÷18) 40.120-36×4÷18+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12× 4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷4= 5.38+7.85-5.37= 46.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.5 51.2÷2.5+2.5÷2 52.194-64.8÷1.8×0.9 53.36.72÷4.25×9.9 54.×6 55.24÷2.4-2.5×0.8 56.()÷7 57.671×15-974 58.469×12+1492 59.405×() 60.3.416÷(0.016×35) 61.0.8×[(10-6.76)÷1.2] 62.19.4×6.1×2.3 5.67×0.2-0.62 63.18.1×0.92+3.93 0..875 64.0.4×0.7×0.25 0.75×102 100-56.23 65.0.78+5.436+1 4.07×0.86+9.12.5 简便运算 1. 1-2+3-4+5-6+7-8+9-10+11-12+................+05- =1+(3-2)+(5-4)+.........+() =1+(2007-1)/2 =1005 2、480+325+75 =480+(325+75) =480+400 =880 3、295-128-72 =295+(128+72) =295+200 =495 4、43×25×4 =43×(25×4) =43×100 =4300 5、102×43 =(100+2)×43 =100×43+2×43 =4300+86 =4386 6、9×37+9×63 =9×(63+37) =9×100 =900 7.66×38-987÷21 66×38-987÷21 = =2508-47 =61 =2461 8.1.25*17.6+36.1/0.8+2.36*12.5 1.25*17.6+36.1/0.8+2.36*12.5 =(5/4)*17.6+36.1*(5/4)+23.6*(50/4) =176/8+361/8+236/8 =773/8=96.625 9.7.5*2.3+1.9*2.5 7.5*2.3+1.9*2.5 =7.5*(1.9+0.4)+1.9*2.5 =(7.5+2.5)*1.9+7.5*0.4 =19+3 =22 10.05 05 =()*(2003+2) =03 11.276*543-267/276+543*275 276*543-267/276+543*275 =543*(276+275)-267/276 =543*551-267/276 12.00-97-+……+2+1 =()+()+()+()+……+(6-4)+(5-3)+2+1 =2+2+2+2+……+2+2(从3-个数,所以有+1 =+1 =2003 13.1/3+1/15++1/35+1/63+九十1/9 =1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+1/(9×11) =1/2×(1-1/3)+1/2×(1/3-1/5)+1/2×(1/5-1/7)+1/2×(1/7-1/9)+1/2×(1/9-1/11) =1/2×(1 - 1/3 + 1/3 - 1/5 + 1/5 - 1/7 + 1/7 - 1/9 + 1/9 - 1/11) =1/2×(1-1/11) =1/2×10/11 =5/11 14.0.49÷1.4 1.25×2.5×32 3.6-0.6×2 15.3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4 16.5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2 17.0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4) 18.5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7 19.4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101 20.27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44 21.9.9×0.625×101-62.5 22.9.9×8.6+0.86 23.0. 46×7.5+0. 46×2. 5 24.4.6×8.04+6.4×8.04-8.04 25.5.4×0.15÷0.2+4.6×0.15 =27*0.15+4.6*0.15 =(27+4.6)*0.15 =31.6*0.15 =4.74 26.55×10.43+104.3×4.4+104.3×0.1 =55×10.43+10.43×44+10.43×1 =(55+44+1)*10.43 =100*10.43 =1043 解方程 1.5/17-x=1/5 2.5/9+x=23 3.6x-x=0.5 4.x-4/9=2/3 5.4x+20=3.9 6.4x+12=50 7.17+8.3 4x=50-12 8.4x=38 9.2.3x-1.02=0.36 10.24 x=0.6 11.X-5.7=2.15 12.15 5X-2X=18 13.3X+0.7=5 14.3.5×2= 4.2+x 15.26×1.5= 2x+10 16.0.5×16―16×0.2=4x 17.13 9.25-X=0.403 18.16.9÷X=0. 3 19.X÷0.5=2.6 20.x+13=33 21.3 - 5x=80 22.1.8 +6x=54 23.6.7x -60.3=6.7 24.9 +4x =40 25.0.2x-0.4+0.5=3.7 26.9.4x-0.4x=16.2 口算(补充): 17×40=680, 100-63=37, 3.2+1.68=4.88, 2.8×0.4= 1.12 14-7.4=6.6, 1.92÷0.04=48, 0.32×500=160, 0.65+4.35= 5 10-5.4=4.6, 4÷20=0.2, 3.5×200=700, 1.5-0.06=1.44 0.75÷15=0.05, 0.4×0.8=0.32, 4×0.25=1, 0.36+1.54=2 1.01×99=99.99, 420÷35=12, 25×12=300, 135÷0.5=270 3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4 1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4 3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5 0.51÷17=0.03, 32.8+19=51.8, 5.2÷1.3=4, 1.6×0.4= 0.64 4.9×0.7=3.43, 1÷5=0.2, 6÷12=0.5, 0.87-0.49=0.38 还有: 1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2.75 13.1/2×3/5 14.3.375+5.75+2.25+6.625 15.÷18 16.3.8×5.25+14.5 17.2.1*4.3+5.7*2.1 18.30×1/3 19.102*45-328 20.2/3×12 21.2.8*3.1+17.6/8 22.3/5×5/6 23.(50-12.5)/2.5 24.2/5×1/3 25. 26.1/2-1/6 27.3.5*2.7-52.2/18 28.1/7×1/5 29.3.375*0.97+0.97*6.625 30.25×4/5 31.6.54+2.4+3.46+0.6 32.5/6-1/2 33.95.6*1.8+95.6*8.2 34.1/2×1/5 35.600-420/12 36.344/3.6-5.4*0.25 37.16/2+30/2+90/6 38.. 39. 40.0.15/0.25+0.75*1.2 41.(1/2+1/3+1/4)*0.24 42.(25+4)*4 43.300-4263/21 44.0.81/0.25+5.96 45.403÷13×27 46.1.5×4.2-0.75÷0.25 47.3.27×4 +3.27×5.7 48.(1.2+ 1.8)×4.5÷32 49.0.25×80-0.45÷0.9 50.÷32 51.0.25*2.69*4 52. 53.2/9*15/8-1/12*9/5 54.2.4+2.4*(5.375-3.375) 55.645-45*12 56.0.15+1.2/0.24-0.45 57.3.75-(2.35+0.25/1.25) 58.76*1/4+23*25/100+0.25 59.10-2.87-7.13 60.0.96+9.6*9.9 61.7.5-5.7*1/3 62.12.37-3.25-6.75 63.16*6.8+2.2*16+16 64.401*19+284 65.58.7-16.65/3.7 66.0.4*4.7*2.5+(2.3+5.3) 67.9.31-1.125-7.875 68.640+128*45 69.8.2*1.6-0.336/4.2 70.400*(0.62+0.08) 1.5×3.6=( ) 3.7×5.3=( ) 2.3×6=( ) 8.1×3.4=( ) 7.6×4.3=( ) 1.6×5.3=( ) 4.3×7-6.3+5.1=( ) 6.2÷3.1×4.5=( ) (8.6-1.5+9.4)×9.3=( )(5.3+2.7)÷(3.6+2.5)=( ) 4.5*6=? 6-4.05=? 8.4÷0.7=? 3.67+6.13=? 0.5*1.2=? 0.55÷1.1=? 5.42+7.5*1.6=? 0.25*1.7*0.4=? 7.86-=? 0.125*32*2.5=? 4.5*6=? 6-4.05=? 8.4÷0.7=? 3.67+6.13=? 0.5*1.2=? 0.55÷1.1=? 5.42+7.5*1.6=? 0.25*1.7*0.4=? 7.86-=? 0.125*32*2.5=? 4.5*6=? 6-4.05=? 8.4÷0.7=? 3.67+6.13=? 0.5*1.2=? 0.55÷1.1=? 5.42+7.5*1.6=? 0.25*1.7*0.4=? 7.86-=? 0.125*32*2.5=?1.125*3+125*5+25*3+25 2.*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + ( 1/8 + 1/9 ) 12. 9 × 5/6 + 5/6 13. 3/4 × 8/9 - 1/3 14. 7 × 5/49 + 3/14 15. 6 ×( 1/2 + 2/3 ) 16. 8 × 4/5 + 8 × 11/5 17. 31 × 5/6 – 5/6 18. 9/7 - ( 2/7 – 10/21 ) 19. 5/9 × 18 – 14 × 2/7 20. 4/5 × 25/16 + 2/3 × 3/4 21. 14 × 8/7 – 5/6 × 12/15 22. 17/32 – 3/4 × 9/24 23. 3 × 2/9 + 1/3 24. 5/7 × 3/25 + 3/7 25. 3/14 ×× 2/3 + 1/6 26. 1/5 × 2/3 + 5/6 27. 9/22 + 1/11 ÷ 1/2 28. 5/3 × 11/5 + 4/3 29. 45 × 2/3 + 1/3 × 15 30. 7/19 + 12/19 × 5/6 31. 1/4 + 3/4 ÷ 2/3 32. 8/7 × 21/16 + 1/2 33. 101 × 1/5 – 1/5 × 21 34.50+160÷40 35.120-144÷18+35 36.347+45×2-4160÷52 37(58+37)÷(64-9×5) 38.95÷(64-45) 39.178-145÷5×6+42 40.812-700÷(9+31×11) 41.85+14×(14+208÷26) 43.120-36×4÷18+35 44.(58+37)÷(64-9×5) 45.(6.8-6.8×0.55)÷8.5 46.0.12× 4.8÷0.12×4.8 47.(3.2×1.5+2.5)÷1.6 48.6-1.6÷4= 5.38+7.85-5.37= 49.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 50.6.5×(4.8-1.2×4)= 51.5.8×(3.87-0.13)+4.2×3.74 52.32.52-(6+9.728÷3.2)×2.5 53.[(7.1-5.6)×0.9-1.15] ÷2.5 54.5.4÷[2.6×(3.7-2.9)+0.62] 55.12×6÷(12-7.2)-6 56.12×6÷7.2-6 57.0.68×1.9+0.32×1.9 58.58+370)÷(64-45) 59.420+580-64×21÷28 60.136+6×(65-345÷23) 15-10.75×0.4-5.7 62.18.1+(3-0.299÷0.23)×1 63.(6.8-6.8×0.55)÷8.5 64.0.12× 4.8÷0.12×4.8 65.(3.2×1.5+2.5)÷1.6 66.3.2×6+(1.5+2.5)÷1.6 67.0.68×1.9+0.32×1.9 68.10.15-10.75×0.4-5.7 69.5.8×(3.87-0.13)+4.2×3.74 70.32.52-(6+9.728÷3.2)×2.5 71.[(7.1-5.6)×0.9-1.15] ÷2.5 72.5.4÷[2.6×(3.7-2.9)+0.62] 73.12×6÷(12-7.2)-6 74.12×6÷7.2-6 75.33.02-(148.4-90.85)÷2.5 1) 76.(25%-695%-12%)*36 77./4*3/5+3/4*2/5 78.1-1/4+8/9/7/9 79.+1/6/3/24+2/21 80./15*3/5 81.3/4/9/10-1/6 82./3+1/2)/5/6-1/3]/1/7 83./5+3/5/2+3/4 84.(2-2/3/1/2)]*2/5 85.+9 86.3+456-52*8 87.5%+6325 88./2+1/3+1/4 2) 89+456-78 3) 5%+. 3/7 × 49/9 - 4/3 4) 9 × 15/36 + 1/27 5) 2× 5/6 – 2/9 ×3 6) 3× 5/4 + 1/4 7) 94÷ 3/8 – 3/8 ÷6 8) 95/7 × 5/9 + 3/7 × 5/9 9) 6/2 -( 3/2 + 4/5 ) 10) 8 + ( 1/8 + 1/9 ) 11) 8 × 5/6 + 5/6 12) 1/4 × 8/9 - 1/3 13) 10 × 5/49 + 3/14 14) 1.5 ×( 1/2 + 2/3 ) 15) 2/9 × 4/5 + 8 × 11/5 16) 3.1 × 5/6 – 5/6 17) 4/7 - ( 2/7 – 10/21 ) 18) 19 × 18 – 14 × 2/7 19) 5 × 25/16 + 2/3 × 3/4 20) 4 × 8/7 – 5/6 × 12/15 21) 7/32 – 3/4 × 9/24 22) 1、 2/3÷1/2-1/4×2/5 2、 2-6/13÷9/26-2/3 3、 2/9+1/2÷4/5+3/8 4、 10÷5/9+1/6×4 5、 1/2×2/5+9/10÷9/20 6、 5/9×3/10+2/7÷2/5 7、 1/2+1/4×4/5-1/8 8、 3/4×5/7×4/3-1/2 9、 23-8/9×1/27÷1/27 10、 8×5/6+2/5÷4 11、 1/2+3/4×5/12×4/5 12、 8/9×3/4-3/8÷3/4 13、 5/8÷5/4+3/23÷9/11 23) 1.2×2.5+0.8×2.5 24) 8.9×1.25-0.9×1.25 25) 12.5×7.4×0.8 26) 9.9×6.4-(2.5+0.24)(27) 6.5×9.5+6.5×0.5 0.35×1.6+0.35×3.4 0.25×8.6×4 6.72-3.28-1.72 0.45+6.37+4.55 5.4+6.9×3-(25-2.5)2×0 4.8×46+4.8×54 0.8+0.8×2.5 1.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×20 23.65-(3.07+3.65) (4+0.4×0.25)8×7×1.25 1.65×99+1.65 27.85-(7.85+3.4) 48×1.25+50×1.25×0.2×8 7.8×9.9+0.78 (+681+6)×12 3××6×854 5.15×7/8+6.1-0.60625 1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14 12. 6 ×( 1/2 + 2/3 ) 13. 8 × 4/5 + 8 × 11/5 14. 31 × 5/6 – 5/6 15. 9/7 - ( 2/7 – 10/21 ) 16. 5/9 × 18 – 14 × 2/7 17. 4/5 × 25/16 + 2/3 × 3/4 18. 14 × 8/7 – 5/6 × 12/15 19. 17/32 – 3/4 × 9/24 20. 3 × 2/9 + 1/3 21. 5/7 × 3/25 + 3/7 22. 3/14 ×× 2/3 + 1/6 23. 1/5 × 2/3 + 5/6 24. 9/22 + 1/11 ÷ 1/2 25. 5/3 × 11/5 + 4/3 26. 45 × 2/3 + 1/3 × 15 27. 7/19 + 12/19 × 5/6 28. 1/4 + 3/4 ÷ 2/3 29. 8/7 × 21/16 + 1/2 30. 101 × 1/5 – 1/5 × 21 31.50+160÷40 (58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42 420+580-64×21÷28 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 38.85+14×(14+208÷26) 39.(284+16)×(512-8208÷18) 40.120-36×4÷18+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12× 4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷4= 5.38+7.85-5.37= 46.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.5 51.[(7.1-5.6)×0.9-1.15] ÷2.5 52.5.4÷[2.6×(3.7-2.9)+0.62] 53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6 102×4.5 7.8×6.9+2.2×6.9 5.6×0.25 8×(20-1.25) 1)127+352+73+44 (2)89+276+135+33 (1)25+71+75+29 +88 (2)243+89+111+57 ÷28×21 920- 690+47×52-398 148+ 360×24÷32+730 ×54 51+()×23 4215+()÷81 (247+18)×27÷25 36-720÷(360÷18) 1080÷(63-54)×80 (528+912)×5-6178 -904 264+318-8280÷69 (174+209)×26- 9000 814-(278+322)÷15 ÷45 ÷38+504 796-5040÷(630÷7) 285+()÷36 1+5/6-19/12 3x(-9)+7x(-9 (-54)x1/6x(-1/3) 1.18.1+(3-0.299÷0.23)×1 2.(6.8-6.8×0.55)÷8.5 3.0.12× 4.8÷0.12×4.8 4.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 5.6-1.6÷4= 5.38+7.85-5.37= 6.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 7.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 8.10.15-10.75×0.4-5.7 9.5.8×(3.87-0.13)+4.2×3.74 10.32.52-(6+9.728÷3.2)×2.5 11.[(7.1-5.6)×0.9-1.15] ÷2.5 12.5.4÷[2.6×(3.7-2.9)+0.62] 13.12×6÷(12-7.2)-6 14.12×6÷7.2-6 15.33.02-(148.4-90.85)÷2.5 2/5*5= 54/8*7= 1\2×8= 1/2+1/3 2/1-5/4 9\3*3\9 3/4+5/4=? 4/5+6/5=? 5/6+6/7=? 三分之一加六分之五 1\3×9= 4\9×7= 9\11×8= 3\6×2\9= 5\9×7\2= 1\10×9\4= 23\4×2\6= 76\5×1\38= 87\9×3\19= 15\4×1\3= 56\2×1\8= 2\9×3\18= 1\4×3= 12\13×26= 19\6×3\2= 2\3×7\2= 6\7×14\2= 16\7×21\4= 29\3×6= 1\2×6= 1\6×9= 4\3×7= 9\4×8= 3\12×2\9= 5\9×7\5= 1\10×9\2= 24\4×2\6= 76\7×1\38= 87\6×3\19= 12\4×1\3= 56\2×1\7= 2\9×6\18= 1\4×7= 3\13×26= 17\6×3\2= 2\3×9\2= 6\5×14\2= 16\7×28\4= 29\2×6= 1\2×7= 1\4×9= 4\3×9= 9\4×11= 3\15×2\9= 5\7×7\5= 1\23×9\2= 24\4×1\6= 76\13×1\38= 87\9×3\19= 12\5×1\3= 56\12×1\7= 2\9×15\18= 1\11×7= 3\19×26= 17\8×3\2= 2\6×9\2= 6\15×14\2= 16\14×28\4= 29\2×4= 9/8*5/8= 5/9*8/8= 4 1/3-3 1/2)x=10.5 (13/3-7/2)x=10.5 (26/6-21/6)x=10.5 5/6x=10.5 x=10.5*6/5 x=12.6 4 1/3-3 1/2)x=10.5有了再传 13/3-7/2)x=21/2 (26/6-21/6)x=21/2 5/6x=21/2 x=21*3/5=63/5=12.6
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