题目内容
计算:100-3
÷(2
-0.625)×(1.6+2
)=
.
| 1 |
| 8 |
| 1 |
| 12 |
| 2 |
| 3 |
| 636 |
| 7 |
| 636 |
| 7 |
分析:根据题意,把带分数化成假分数,小数化成分数,根据分数四则混合运算计算即可.
解答:解:100-3
÷(2
-0.625)×(1.6+2
),
=100-
÷(
-
)×(
+
),
=100-
÷(
-
)×(
+
),
=100-
×
×
,
=100-
,
=
.
| 1 |
| 8 |
| 1 |
| 12 |
| 2 |
| 3 |
=100-
| 25 |
| 8 |
| 25 |
| 12 |
| 5 |
| 8 |
| 8 |
| 5 |
| 8 |
| 3 |
=100-
| 25 |
| 8 |
| 50 |
| 24 |
| 15 |
| 24 |
| 24 |
| 15 |
| 40 |
| 15 |
=100-
| 25 |
| 8 |
| 24 |
| 35 |
| 64 |
| 15 |
=100-
| 64 |
| 7 |
=
| 636 |
| 7 |
点评:根据混合运算的方法进行计算,注意运算顺序.
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