3.9除1.2+0.6的和乘6如何简便计算

2025-04-14 05:41:15
推荐回答(1个)
回答1:

3.9÷(1.2+0.6)×6
=3.9÷1.8×6
=3.9×6÷(6×0.3)
=3.9×6÷6÷0.3
=(3.9÷0.3)×(6÷6)
=13×1
=13