三的1.8倍比一又4⼀5与2.2的和多多少?

2025-05-14 09:22:27
推荐回答(1个)
回答(1):

解:由题意得
3×1.8÷9/5+2.2
=3×1.8×5/9+2.2
=3×0.2×5+2.2
=3+2.2
=5.2