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2.5×37.8×0.8怎么用简便方法计算

2.5×37.8×0.8怎么用简便方法计算 2.5×37.8×0.8 =2.5x0.4x2x37.8 =1x75.6 =75.6

101×37.8-1.25×37.8×0.8用简便方法计算 =37.8x(101-1) =37.8x100 =3780

先乘后两位得1,再跟第一位相乘得37

37×8+37×2 =37×(8+2) =37×10 =370 你好,本题已解答,如果满意 请点右下角“采纳答案”。

83.7×0.2+8.37×7+8.37 =8.37*2+8.37*7+8.37 =8.37*(2+7+1) =83.7

1.25x8.37x0.8 =1.25x0.8x8.37 =1x8.37 =8.37 望采纳

37.8÷1.25×0.8(可以用简便算法吗?) 37.8÷1.25×0.8 =37.8*0.8*(1/1.25) =37.8*0.8/0.8 =37.8

(1)4.37×0.55+56.3×0.055=43.7×0.055+56.3×0.055=(43.7+56.3)×0.055=100×0.055=5.5(2)2.5×1.6×1.25=2.5×2×0.8×1.25=(2.5×2)×(0.8×1.25)=5×1=5(3)0.59×9.8=0.59×(10-0.2)=0.59×10-0.59×0.2=5.9-0.118=5.782(4)53.6×38.2+536×6.08...

原式=8.37×(0.2+2.8) =8.37×3 =25.11

37.8*0.5-7.8*0.5=(37.8-7.8)*0.5=30*0.5=15

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