问题
解答题
计算下列各题,并验算.
|
答案
9.6+17.4=27;
9.6
;+17.4 27.0
验算:
17.4
;+9.6 27.0
1.67-0.73=0.94;
1.67
;-0.73 0.94
验算:
0.73
;+0.94 1.67
7-1.854=5.146;
7
;-1.854 5.146
验算:
1.854
;+5.146 7.000
12.78+6.38=19.16;
12.78
;+6.38 19.16
验算:
6.38
.+12.78 19.16