3.2×6.5简便运算

2025-04-24 20:33:49
推荐回答(3个)
回答1:

3.2×6.5
=(3+0.2)(6+0.5)
=18+1.2+1.5+0.1
=18+2.8
=20.8

回答2:

3.2×6.5
=0.8x(4x6.5)
=0.8x26
=20.8

回答3:

这样做看看吧