简便运算 (5.3×3.75+3.75×3.5)÷2.2

2025-06-26 01:45:37
推荐回答(1个)
回答1:

(5.3×3.75+3.75×3.5)÷2.2
={(5.3+3.5)x3.75}÷2.2
=(8.8x3.75)÷2.2
=8.8÷2.2x3.75
=4x3.75
=15