37×5÷36怎样简便计算。78.87-42.6-12.27怎样简便计算。

2025-05-12 15:11:52
推荐回答(2个)
回答1:

37×5÷36
=(36+1)×5÷36
=(36+1)×5/36
=36×5/36+1×5/36
=5+5/36
=5又5/36
78.87-42.6-12.27
=78.87-12.27-42.6
=66.6-42.6
=24

回答2: