136X7 64x7简便计算怎么做?

2024-11-25 17:42:54
推荐回答(2个)
回答1:

用分配率做
136X7+64x7
=(136+64)x7
=200x7
=1400
望采纳,谢谢

回答2:

136×7+64×7
=7×(136+64)
=7×200
=1400