12.78-(1.78-1.24)+6.76能简算吗?
问题描述:
12.78-(1.78-1.24)+6.76能简算吗?
答
12.78-(1.78-1.24)+6.76
=12.78-1.78+1.24+6.76
=(12.78-1.78)+(1.24+6.76)
=11 + 8
=19