问题
解答题
列竖式计算,*号题要验算.
7.01-4.98=______;
*71.7-7=______;
*8.72+2.8=______;
8.26-2.6=______.
答案
(1)7.01-4.98=2.03;
7.01
;-4.98 2.03
(2)71.7-7=64.7;
71.7
;-7 64.7
验算:
64.7
;+7 71.7
(3)8.72+2.8=11.52;
8.72
;+2.8 11.52
验算:
2.8
;+8.72 11.52
(4)8.26-2.6=5.66;
8.26
.-2.6 5.66
故答案为:2.03,64.7,11.52,5.66.