12.5×42×0.8和3.8×5.6+4.4×3.8用脱式计算怎么算

12.5×42×0.8和3.8×5.6+4.4×3.8用脱式计算怎么算
2024-10-30 23:24:17
推荐回答(1个)
回答1:

12.5×42×0.8
=(12.5×0.8)×42
=10×42
=420

3.8×5.6+4.4×3.8
=3.8×(5.6+4.4)
=3.8×10
=38