(1) 5 .8 4
+ 2 6 .3 6
3 2 .2 0
验算:32.20-26.36=5.84 (2) 1 0 .2 5
- 9 .6 8
0 .5 7
验算:0.57+9.68=10.25
(3) 2 0
- 1 2 .3 9
7 .6 1
验算:7.61+12.39=20 (4) 1 5 .8
+ 1 6 .2 8
3 2 .0 8
验算:32.08-16.28=15.8
(1) 5 .8 4
+ 2 6 .3 6
3 2 .2 0
验算:32.20-26.36=5.84 (2) 1 0 .2 5
- 9 .6 8
0 .5 7
验算:0.57+9.68=10.25
(3) 2 0
- 1 2 .3 9
7 .6 1
验算:7.61+12.39=20 (4) 1 5 .8
+ 1 6 .2 8
3 2 .0 8
验算:32.08-16.28=15.8