题目内容
计算:
(1)
×
( 2)
-
-
(3)(
+5
)×
(4)
+|
-2|+(2-π)0
(5)
÷3
×(-5
).
(1)
| 14 |
| 35 |
( 2)
| 27 |
| 1 |
| 3 |
| 18 |
| 12 |
(3)(
| 12 |
| 8 |
| 3 |
(4)
| 12 |
| 3 |
(5)
2
|
| 28 |
2
|
(1)原式=
×
×
×
=7
;
(2)原式=3
-
×3
-2
=3
-
-2
=
-
;
(3)原式=(2
+10
)×
=2
×
+10
×
=6+10
;
(4)原式=2
+2-
+1
=
+3;
(5)原式=
×
×(-5
)
=-
×
×
=-
.
| 7 |
| 2 |
| 5 |
| 7 |
=7
| 10 |
(2)原式=3
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
=3
| 3 |
| 2 |
| 3 |
=
| 3 |
| 2 |
(3)原式=(2
| 3 |
| 2 |
| 3 |
=2
| 3 |
| 3 |
| 2 |
| 3 |
=6+10
| 6 |
(4)原式=2
| 3 |
| 3 |
=
| 3 |
(5)原式=
|
| 1 | ||
6
|
|
=-
| 3 |
| 2 |
| 1 | ||
6
|
| 20 | ||
|
=-
| 5 |
| 7 |
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