题目内容
| (1)0.12÷0.3= 1.2 1.2 ÷3 |
(2)2.8÷0.07= 280 280 ÷7 |
| (3)0.045÷0.9= 0.45 0.45 ÷9 |
(4)0.36÷0.4= 3.6 3.6 ÷4 |
| (5)0.81÷0.27= 81 81 ÷27 |
(6)2.2÷0.11= 220 220 ÷11 |
| (7) |
(8) |
分析:在除法算式中被除数和除数同时扩大或缩小相同的倍数(0除外),商不变;据此解答即可.
解答:
| 解:(1)0.12÷0.3=1.2÷3 | (2)2.8÷0.07=280÷7 |
| (3)0.045÷0.9=0.45÷9 | (4)0.36÷0.4=3.6÷4 |
| (5)0.81÷0.27=81÷27 | (6)2.2÷0.11=220÷11 |
点评:此题考查了商不变性质的灵活运用.
练习册系列答案
相关题目
| 9.5×100= | 1.25×8 | 0.25×0.9×4= | 1.87×0= |
| 3.5-1.5= | 1.2×0.4= | 3.6×0.5= | 0.6×5= |
| 0.24+0.6= | 0.64×0.03= | 7.8+2.2-1.5= | 8×0.05= |
| 0.125×8= | 1.3×4= | 0.4×0.6= | 3×0.08= |
| 0.35×2= | 2.9×0.3= | 10-0.9= | 5.67×0= |
| 0.8×0.01= | 2.5×0.2= | 2.4×0.3= | 1.6×0.25= |
| 0.17×0.3= | 15×0.01= | 10×0.07= | 0.7×0.05= |
| 0.2×0.05= | 7.8×0.01= | 0.2×0.26= | 0.04×4= |
| 12.4+2.1= | 0.08×0.5= | 0.14×4= | 9×2.5+9×1.5= |
| 1.8×0.5= | 2.3×5= | 0.3×3.6= | 8×0.9+8×2.1= |
| 2.5×4= | 0.8+2.7×2= | 0.05×7= | 4.8+2.1+7.9= |
| 3.4-1.8= | 2.5+0.2×2= | 0.02×0.1= | 5.4-2.8= |
| 0.3×0.2= | 3.5×2×0.1= | 0.3×0.3= | 0×10.3×2.2= |
| 0.12×0.7= | 0.2×0.5= | 0.92×0.4= | 6.7-1.43= |
| 1.2×4= | 1.3×2= | 1.2×0.3= | 4.6+5.08= |