用简便方法计算7.28晨0.1加0.5乘72.8,加0.049城728

2025-04-14 10:23:49
推荐回答(2个)
回答1:

=7.28×0.1+7.28×5+7.28×4.9
=7.28×10.1+5+4.91
=7.28x10
=72.8

回答2:

望采纳