74乘以15➖37乘以28简便方法?
3个回答
展开全部
74x15
=74x(10+5)
=74x10+74x5
=740+370
=1110
37x28
=37x(30-2)
=37x30-x30-37x2
=1110-74
=1036
=74x(10+5)
=74x10+74x5
=740+370
=1110
37x28
=37x(30-2)
=37x30-x30-37x2
=1110-74
=1036
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2021-06-22
展开全部
74x15
=74x(10+5)
=74x10+74x5
=740+370
=1110
37x28
=37x(30-2)
=37x30-x30-37x2
=1110-74
=1036
=74x(10+5)
=74x10+74x5
=740+370
=1110
37x28
=37x(30-2)
=37x30-x30-37x2
=1110-74
=1036
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
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