43+43X39的简便方法

我知道,不敢确定
2025-04-15 01:36:58
推荐回答(5个)
回答1:

43+39*43
=(39+1)*43
=40*43
=1720

回答2:

43*(1+39)=43*40=1720

回答3:

43x(1+39)=42x40=1680

回答4:

=43*(1+39)
=43*40
=1720

回答5:

43+43x39
=43x1+43x39
=43x(39+1)
=43x40
=1720