题目内容
计算题:
(1)(
+
)+(
-
);
(2)
-3
÷(-
).
(1)(
| 48 |
| 20 |
| 12 |
| 5 |
(2)
4
|
| 5 |
| 3 |
| 4 |
| 10 |
(1)原式=4
+2
+2
-
=6
+
;
(2)原式=3×(-
)
=-
.
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
(2)原式=3×(-
| 4 |
| 3 |
|
8
| ||
| 5 |
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题目内容
| 48 |
| 20 |
| 12 |
| 5 |
4
|
| 5 |
| 3 |
| 4 |
| 10 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 4 |
| 3 |
|
8
| ||
| 5 |