题目内容
计算:
×
+
×
-
×
.
| 4 |
| 17 |
| 3 |
| 13 |
| 5 |
| 17 |
| 4 |
| 26 |
| 4 |
| 17 |
| 11 |
| 26 |
考点:分数的简便计算
专题:运算顺序及法则,运算定律及简算
分析:
×
+
×
-
×
,根据分数的基本性质,把
转化为
,那么原式为:
×
+
×
-
×
,然后根据分数乘法的计算法则、同分母分数的加、减法的计算法则计算.
| 4 |
| 17 |
| 3 |
| 13 |
| 5 |
| 17 |
| 4 |
| 26 |
| 4 |
| 17 |
| 11 |
| 26 |
| 3 |
| 13 |
| 6 |
| 26 |
| 4 |
| 17 |
| 6 |
| 26 |
| 5 |
| 17 |
| 4 |
| 26 |
| 4 |
| 17 |
| 11 |
| 26 |
解答:
解:
×
+
×
-
×
=
×
+
×
-
×
=
+
-
=
=
=0.
| 4 |
| 17 |
| 3 |
| 13 |
| 5 |
| 17 |
| 4 |
| 26 |
| 4 |
| 17 |
| 11 |
| 26 |
=
| 4 |
| 17 |
| 6 |
| 26 |
| 5 |
| 17 |
| 4 |
| 26 |
| 4 |
| 17 |
| 11 |
| 26 |
=
| 24 |
| 442 |
| 20 |
| 442 |
| 44 |
| 442 |
=
| 24+20-44 |
| 442 |
=
| 0 |
| 442 |
=0.
点评:此题考查的目的是理解掌握分数四则运算的计算法则,并且能够正确熟练地进行计算.
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