97乘73速算方法?

2025-01-08 02:53:20
推荐回答(2个)
回答1:

计算如下图:

回答2:

97×73
=(100-3)×(70+3)
=100×70+100×3-70×3-3×3
=7000+300-210-9
=7300-210-9
=7300-200-10-9
=7100-10-9
=7090-9
=7081