题目内容
| 1 |
| 3 |
| 1 |
| 30 |
| 1 |
| 144 |
| 1 |
| 720 |
考点:分数的巧算
专题:计算问题(巧算速算)
分析:把
+0.125+
+
+
运用加法交换律和结合律,进行整合,进而简算即可.
| 1 |
| 3 |
| 1 |
| 30 |
| 1 |
| 144 |
| 1 |
| 720 |
解答:
解:
+0.125+
+
+
,
=(
+0.125)+(
+
)+
,
=(
+
)+(
+
)+
,
=
+
+
,
=
+(
+
),
=
+
,
=
;
故答案为:
.
| 1 |
| 3 |
| 1 |
| 30 |
| 1 |
| 144 |
| 1 |
| 720 |
=(
| 1 |
| 3 |
| 1 |
| 30 |
| 1 |
| 720 |
| 1 |
| 144 |
=(
| 1 |
| 3 |
| 1 |
| 8 |
| 1 |
| 30 |
| 1 |
| 720 |
| 1 |
| 144 |
=
| 11 |
| 24 |
| 5 |
| 144 |
| 1 |
| 144 |
=
| 11 |
| 24 |
| 5 |
| 144 |
| 1 |
| 144 |
=
| 11 |
| 24 |
| 1 |
| 24 |
=
| 1 |
| 2 |
故答案为:
| 1 |
| 2 |
点评:根据分数分母的特点,运用加法交换律和结合律,进行解答即可.
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