7.8十1.25x6.8X8怎样简便计算?

2025-04-09 03:01:43
推荐回答(1个)
回答1:

解:依题意得算式,
7.8+1.25×6.8×8
=7.8+1.25×8×6.8
=7.8+10×6.8
=7.8+68
=75.8
即7.8+1.25×6.8×8=75.8