题目内容
| 10 |
| 13 |
| 19 |
| 22 |
| 4 |
| 5 |
| 11 |
| 13 |
| 1 |
| 5 |
| 22 |
| 63 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:把除法变为乘法,把带分数化为假分数,运用乘法交换律与结合律以及乘法分配律简算.
解答:
解:
÷2
-2
×
÷7+
×
=
×
-
×
×
+
×
=
×(
+
)-
=
×
-
=
-
=0
| 10 |
| 13 |
| 19 |
| 22 |
| 4 |
| 5 |
| 11 |
| 13 |
| 1 |
| 5 |
| 22 |
| 63 |
=
| 10 |
| 13 |
| 22 |
| 63 |
| 14 |
| 5 |
| 11 |
| 13 |
| 1 |
| 7 |
| 1 |
| 5 |
| 22 |
| 63 |
=
| 22 |
| 63 |
| 10 |
| 13 |
| 1 |
| 5 |
| 22 |
| 65 |
=
| 22 |
| 63 |
| 63 |
| 65 |
| 22 |
| 65 |
=
| 22 |
| 65 |
| 22 |
| 65 |
=0
点评:仔细观察数据特点,通过数字转化,运用运算定律灵活简算.
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