题目内容
求下列各式的值:
(1)-
(2)
(3)
-
(4)
+
-
-
(5)
×
÷
+|-
|.
(1)-
| 3 |
| ||
(2)
| 292-212 |
(3)
| 1 |
| 3 |
|
| 1 |
| 5 |
| 3 | 1000 |
(4)
|
| 3 |
| ||
1
|
| 9 |
| 16 |
(5)
| 3 | -216 |
|
| 0.25 |
1
|
(1)原式=-
=
=
;
(2)原式=
=20;
(3)原式=
×
-
×10=-
;
(4)原式=
+
-
-
=-
;
(5)原式=-6×
×2+
=-
.
| 3 |
| ||||
|
| 7 |
| 8 |
(2)原式=
| (29+21)×(29-21) |
(3)原式=
| 1 |
| 3 |
| 6 |
| 10 |
| 1 |
| 5 |
| 9 |
| 5 |
(4)原式=
| 2 |
| 3 |
| 1 |
| 3 |
| 5 |
| 4 |
| 9 |
| 16 |
| 13 |
| 16 |
(5)原式=-6×
| 3 |
| 4 |
| 4 |
| 3 |
| 23 |
| 3 |
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