| 1-0.3= | 5.3+0.5= | 4.7-2.3= | 0.5×0.2= |
| 4×0.25= | 1÷0.01= | 10-0.9= | 3.6÷0.3= |
| 8.7+3.41= | 0.01×50= | 2.5×40= | 7.2÷0.8= |
| 5.6-4.6= | 3.8÷1.9= | 10-5.46= | 5.89+0.11= |
| 解： 1-0.3=0.7 | 5.3+0.5=5.8 | 4.7-2.3=2.4 | 0.5×0.2=0.1 |
| 4×0.25=1 | 1÷0.01=100 | 10-0.9=9.1 | 3.6÷0.3=12 |
| 8.7+3.41=12.11 | 0.01×50=0.5 | 2.5×40=100 | 7.2÷0.8=9 |
| 5.6-4.6=1 | 3.8÷1.9=2 | 10-5.46=4.54 | 5.89+0.11=6 |
分析：根据小数加、减、乘、除的计算方法进行计算．
点评：本题主要考查了学生小数的计算能力，注意要认真细心．