巧算2772/28+34965/35suan shi

问题描述:

巧算2772/28+34965/35
suan shi

2772/28+34965/35=(2800-28)+(35000-35)=100-1+1000-1 = 1098

2772 = 2800 - 28
34965 = 35000 - 35
所以答案=100-1+1000-1 = 1098

2772/28+34965/35
=(2800-28)/28+(35000-35)/35
=100-1+1000-1
=1100-2
=1098