十道简便计算带答案

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十道简便计算带答案



12.64×1.7-2.64×0.7 =2.64×(1.7-0.7 =2.64×1 =2.64

231.5×1.07-3.15×0.7 =3.15×10.7-3.15×0.7 =3.15×(10.7-0.7 =3.15×10 =31.5

32.7×5.7-2.7+5.3×2.7 =2.7×(5.7-1+5.3 =2.7×10 =27

40.625÷0.125×0.8

=0.625×0.8)×8÷(0.128×8 =0.5×8÷1 =4

518.6×6.1+3.9×18.6 =18.6×(6.1+3.9 =18.6×10 =186

61.3579+3.5791+5.7913+7.9135+9.1357






=1+3+5+7+9)×1.1111 =25×1.1111 =27.7775

752.5x2.9+5.45 =5.25x29+5.25+0.2 =5.25×(29+1+0.2 =5.25×30+0.2 =157.5+0.3 =157.7

80.92x15+0.08x15 =0.92+0.08)×15 =1×15 =15

90.72×1.25×2.5 =0.9×(0.8×1.25)×2.5 =0.9×1×2.5 =2.25

10400.6x7-2003x0.4 =200.3x14-200.3x4 =200.3×(14-4 =200.3×10 =2003




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