6.25×7.9 7.9×3.75的简便运算?

2025-04-08 20:11:52
推荐回答(1个)
回答1:

6.25×7.9-7.9×3.75
=(6.25-3.75)×7.9
=2.5×7.9
=15.8+3.95
=19.75