题目内容
| 0.81+15.3= | 1300-497= | 3-1/2= | 3/4+0.72= | ||||||||
| 1÷0.04= | 1/8÷0.625= | 4.5×4/15= |
| ||||||||
| 1.5+2/3×3= | 1-1/3×2/5= | 1.25×0.36×8= | 1÷(2-2.09)= |
分析:本题可按照运算法则直接运算.
解答:解:0.81+15.3=16.11 1300-497=803 3-
=2
+0.72=1.47
1÷0.04=25
÷0.625=
4.5×
=
:
=
1.5+
×3=3.5 1-
×
=
1.25×0.36×8=3.6 1÷(2.09-2)=
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 4 |
1÷0.04=25
| 1 |
| 8 |
| 1 |
| 5 |
| 4 |
| 15 |
| 6 |
| 5 |
| 1 |
| 105 |
| 1 |
| 5 |
| 1 |
| 21 |
1.5+
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 5 |
| 13 |
| 15 |
| 100 |
| 9 |
点评:本题用运算法则直接运算,要看清楚数字和运算符号.有小数和分数时,看清化成那个更简单,看是否可用简算.
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