| 口算: 9×3=________; | 29-8=________; | 360-120=________; | 2300-2000=________; |
| 44÷8=________; | 24+6=________; | 3×6=________; | 400+________=950; |
| 35÷5=________; | 40+5=________; | 23÷4=________; | 60+________=100. |
分析:根据整数加法、减法、乘法、除法的计算法则,直接进行口算.
解答:
| 解:9×3=27; | 29-8=21; | 360-120=240; | 2300-2000=300; |
| 44÷8=5.5; | 24+6=30; | 3×6=18; | 400+550=950; |
| 35÷5=7; | 40+5=45; | 23÷4=5.75; | 60+40=100. |
点评:此题主要考查整数加法、减法、乘法、除法的口算方法.