9×28+28用简便方法计算

9×28+28用简便方法计算
2025-04-03 09:09:17
推荐回答(3个)
回答1:

解:原式=28*(9+1)
=280

回答2:

9x28+28
=(9+1)x28
=10x28
=280

回答3:

9×28+28

=(9+1)×28

=10×28
=280