13.2×(10-0.9)用简便方法计算

13.2×(10-0.9)用简便方法计算
2025-04-26 17:36:06
推荐回答(1个)
回答1:

13.2×(10-0.9)
=13.2×10-13.2×0.9
=132-13.2×(1-0.1)
=132-13.2+13.2×0.1
=118.8+1.32
=120.12