题目内容
笔算.(带△的要验算)
| △295+368= | △706-188= | 289+311= | 162×5= | 309×7= | 260×5= |
| 56÷7= | 405×7= | 39÷6= | 87÷9= | 69÷8= |
分析:根据整数的加减乘除法的竖式的计算法则计算即可.
解答:解:295+368=663;
295
验算 3 6 8
706-188=518;
706
验算:518
289+311=600;
2 8 9
162×5=810;
162
309×7=2163;
309
260×5=1300;
260
56÷7=8;
8
7
405×7=2835;
405
39÷6=6…3;
6
6
87÷9=9…6;
9
9
69÷8=8…5.
8
8
295
| + 3 6 8 |
| 6 6 3 |
验算 3 6 8
| + 2 9 5 |
| 6 6 3 |
706-188=518;
706
| - 1 8 8 |
| 5 1 8 |
验算:518
| + 1 8 8 |
| 7 0 6 |
289+311=600;
2 8 9
| + 3 1 1 |
| 6 0 0 |
162×5=810;
162
| × 5 |
| 8 1 0 |
309×7=2163;
309
| × 7 |
| 2 1 6 3 |
260×5=1300;
260
| × 5 |
| 1 3 0 0 |
56÷7=8;
8
7
| 56 |
| 5 6 |
| 0 |
405×7=2835;
405
| × 7 |
| 2 8 3 5 |
39÷6=6…3;
6
6
| 39 |
| 36 |
| 3 |
87÷9=9…6;
9
9
| 87 |
| 81 |
| 6 |
69÷8=8…5.
8
8
| 69 |
| 64 |
| 5 |
点评:本题考查了加减乘除法的四则运算的竖式的计算方法,是基础题,要仔细认真.
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