Question

7.25 2.75✘1.2用简便运算？

Answer 1

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

Answer 2

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