题目内容
竖式计算
| 26.7-17.5= | 61.6+31.9= | 30-1.65= | 24.08+4.33=验算 |
| 67.08-7.58=验算 | 32.5+17.45=验算 | 45.8-22.27=验算. |
分析:根据小数加减法竖式计算的方法求解.
解答:解:26.7-17.5=9.2;
26.7
;
61.6+31.9=93.5;
61.6
;
30-1.65=28.35;
30
;
24.08+4.33=28.41;
24.08
;
验算:
4.33
;
67.08-7.58=59.5;
67.08
;
验算:
59.05
;
32.5+17.45=49.95;
32.5
;
验算:
17.45
;
45.8-22.27=23.53;
45.8
;
验算:
22.27
.
26.7
| -17.5 |
| 9.2 |
61.6+31.9=93.5;
61.6
| +31.9 |
| 93.5 |
30-1.65=28.35;
30
| -1.65 |
| 28.35 |
24.08+4.33=28.41;
24.08
| +4.33 |
| 28.41 |
验算:
4.33
| +24.08 |
| 28.41 |
67.08-7.58=59.5;
67.08
| -7.58 |
| 59.05 |
验算:
59.05
| +7.58 |
| 67.08 |
32.5+17.45=49.95;
32.5
| +17.45 |
| 49.95 |
验算:
17.45
| +32.5 |
| 49.95 |
45.8-22.27=23.53;
45.8
| -22.27 |
| 23.53 |
验算:
22.27
| +23.53 |
| 45.80 |
点评:本题考查了小数竖式计算的方法,注意把小数点对齐,小数点对齐数位才能对齐.
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竖式计算
| 26.7-17.5= | 61.6+31.9= | 30-1.65= | 24.08+4.33=验算 |
| 67.08-7.58=验算 | 32.5+17.45=验算 | 45.8-22.27=验算. |