题目内容
不用计算器计算:
(1)2
+3
-4
(2)
÷
×2
÷2
(3)|1-
|+(
-1)0
(4)(
)-2+2
-4.
(1)2
| 3 |
| 3 |
| 3 |
(2)
| 5 |
| 2 |
| 2 |
| 5 |
(3)|1-
| 3 |
| 3 |
(4)(
| 1 | ||
|
| 3 |
(1)原式=
;
(2)原式=
×2
÷2
=2
÷2
=1;
(3)原式=
-1+1
=
;
(4)原式=(
-1)2+2
-4
=4-2
+2
-4
=0.
| 3 |
(2)原式=
| ||
|
| 2 |
| 5 |
=2
| 5 |
| 5 |
=1;
(3)原式=
| 3 |
=
| 3 |
(4)原式=(
| 3 |
| 3 |
=4-2
| 3 |
| 3 |
=0.
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