7.25 2.75ᠧ1.2用简便运算?

2025-02-23 00:13:09
推荐回答(2个)
回答1:

直接计算就可以:
7.25+2.75✘1.2
=7.25+3.3
=10.55

回答2:

7.25×1.2+2.75×1.2-7.25×0.2=1.2×10-1.45=12-1.45=10.55