求三道题的简便运算,要横式的

2025-04-03 22:32:28
推荐回答(1个)
回答1:

2.35×99+2.35
=2.35×(99+1)
=2.35×100
=235

50×34×0.2
=(50×0.2)×34
=10×34
=340

1.25×5.6
=1.25×8×0.7
=10×0.7
=7