一百零一9.87减9.87的简便运算

一百零一9.87减9.87的简便运算
2025-02-26 06:19:54
推荐回答(2个)
回答1:

101x9.87-9.87
=9.87x(100+1)
=100x9.87+1x9.87
=987+10.87
=997.87

回答2:

101x9.87-9.87
=9.87x(101-1)
=987