问题 解答题
列竖式计算并验算.
18.72+16.16=
19.78+102.92=
14.63-9.98=
答案

18.72+16.16=34.88

验算:

19.78+102.92=122.7

验算:

14.63-9.98=4.65

验算:

单项选择题
单项选择题