题目内容
看谁算得又对又快
| 0.45-0.23= | 363+423= | 27÷
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1÷
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16÷
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考点:分数的加法和减法,分数乘法,分数除法
专题:运算顺序及法则
分析:(1)(2)数位对齐;(3)(5)(8)(9)(12)(13)把除法变为乘法计算,能约分的要约分;(4)分子相乘的积做分子,分母相乘的积做分母;(6)(7)(11)通分计算;(10)(14)(15)约分计算.
解答:
解:0.45-0.23=0.22 363+423=786 27÷
=99
×
=
÷4=
+
=
-
=
1÷
=10
16÷
=28
×
=
+
=
÷9=
÷12=
×
=
×
=
| 3 |
| 11 |
| 2 |
| 3 |
| 4 |
| 5 |
| 8 |
| 15 |
| 1 |
| 2 |
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 12 |
| 1 |
| 10 |
16÷
| 4 |
| 7 |
| 3 |
| 8 |
| 4 |
| 9 |
| 1 |
| 6 |
| 1 |
| 6 |
| 2 |
| 3 |
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
| 6 |
| 7 |
| 1 |
| 14 |
| 4 |
| 9 |
| 1 |
| 3 |
| 4 |
| 27 |
| 7 |
| 12 |
| 3 |
| 14 |
| 1 |
| 8 |
点评:此题考查了小数的数位对齐,分数的通分、约分以及乘除法的转化.
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