题目内容
计算:
(1)
×
(2)
+
-
-
(3)
÷
×4
(4)
-
.
(1)
| 2 |
| 32 |
(2)
| 12 |
| 18 |
| 8 |
| 48 |
(3)
3
|
| 2 |
| 5 |
2
|
1
|
(4)
| 12 | ||
3-
|
| 1 | ||
2+
|
(1)原式=
=
=8;
(2)原式=2
+3
-2
-4
=
-2
;
(3)原式=
÷
×4
=1×
×4×
=10×
=
;
(4)原式=
-
=2(3+
)-(2-
)=6+2
-2+
=4+3
.
| 2×32 |
| 64 |
(2)原式=2
| 3 |
| 2 |
| 2 |
| 3 |
| 2 |
| 3 |
(3)原式=
|
| 2 |
| 5 |
|
|
| 5 |
| 2 |
|
5
| ||
| 7 |
50
| ||
| 7 |
(4)原式=
12(3+
| ||||
(3-
|
2-
| ||||
(2+
|
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |
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