题目内容
计算:(2
+3
)-(1.375-
)=
| 1 |
| 7 |
| 1 |
| 8 |
| 6 |
| 7 |
分析:先去掉括号,将分母相同的相加减,再计算即可.
解答:解:(2
+3
)-(1.375-
)
=2
+3
-1.375+
=2
+
+3
-1.375
=3+1
=4
.
| 1 |
| 7 |
| 1 |
| 8 |
| 6 |
| 7 |
=2
| 1 |
| 7 |
| 1 |
| 8 |
| 6 |
| 7 |
=2
| 1 |
| 7 |
| 6 |
| 7 |
| 1 |
| 8 |
=3+1
| 3 |
| 4 |
=4
| 3 |
| 4 |
点评:考查了分数的简便计算,本题的关键是先将同分母分数相加减.
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