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2.7×3.7+0.37×0.8简便计算,并说明运

解:运用拆分法和提取公因式的简便方法, 原式=27x0.37+0.37x0.8 =0.37x(27+0.8) =0.37x27.8 =10.286

2.7x3.7+0.37x73 =27x0.37+0.37x73 =(27+73)x0.37 =100x0.37 =37

2.7x3.7+0.37x73=2.7×3.7+3.7×7.3。 简便后的算式,后面自己算。

2.7×3.7+0.37×73 =2.7×3.7+3.7×7.3 =3.7×(2.7+7.3) =3.7×10 =37

=3.7乘3.7加3.7乘6.3 =3.7乘(3.7加6.3) =3.7乘10 =37

0.68*3.7+3.2*0.37用简便方法计算 0.68*3.7+3.2*0.37 =6.8×0.37+3.2×0.37 =0.37×(6.8+3.2) =0.37×10 =3.7

原式 =3.7×0.58+3.7×0.42 =3.7×(0.58+0.42) =3.7×1 =3.7

是+还是-啊参考 3.7×8.2+0.37×18 =3.7×8.2+3.7×1.8 =3.7×(8.2+1.8) =3.7×10 =37

3.73.7+0.377.2怎么简便运算 3.73.7+0.377.2 =3.7*(3.7+7.2) =3.7*10.9 =40.33

①0.9999×0.7+0.1111×2.7=0.1111×9×0.7+0.1111×2.7=0.1111×6.3+0.1111×2.7=0.1111×(6.3+2.7)=0.1111×9=0.9999②36×1.09+1.2×67.3=1.2×30×1.09+1.2×67.3=1.2×32.7+1.2×67.3=1.2×(32.7+67.3)=1.2×100=120③48×1.08+1.2×56.8=1.2×40×1.08+1.2×56.8...

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