Question

5.75×8.5+5.15×1.7的简便方法？

Answer 1

这道题首先把8.5分成1.7*5，再把5.75*5得28.75，这时就可以应用乘法分配律进行简便计算。5.75*8.5+5.15*1.7=5.75*5*1.7+5.15*1.7=28.75*1.7+5.15*1.7=（28.75+5.15）*1.7=33.9*1.7=57.63谢谢

Answer 2

5.75×8.5+5.15×1.7
=5.75×8.5+5×1.7×1.03
=865×(5.75+1.03)
=865×6.78
=5864.7