0.86+8.6×9.9简便算式!!!

2025-03-24 09:25:41
推荐回答(3个)
回答1:

=0.86+0.86x10x9.9
=0.86+0.86x99
=0.86x(1+99)
=0.86x100
=86

回答2:

0.86+0.86×99=0.86×(1+99)=86

回答3: