题目内容
计算:
(1)3
-(-
)+(-
)+2
(2)-14-
×〔3-(-32)〕×(-2)
(3)(-
-
+
)×(-6)2
(4)-22-[2-(1+
×0.5)]÷[32-(-2)2].
(1)3
1 |
2 |
1 |
3 |
1 |
2 |
2 |
3 |
(2)-14-
1 |
6 |
(3)(-
7 |
9 |
11 |
12 |
1 |
6 |
(4)-22-[2-(1+
1 |
3 |
(1)原式=3
+
-
+2
=3
-
+
+2
=3+3
=6;
(2)原式=-1-
×(3-9)×(-2)
=-1-
×(-6)×(-2)
=-1-2
=-3;
(3)原式=(-
-
+
)×36
=-
×36-
×36+
×36
=-28-33+6
=-61+6
=-55;
(4)原式=-4-[2-(1+
)]÷[9-4]
=-4-[2-1
]÷5
=-4-
×
=-4-
=-4
.
1 |
2 |
1 |
3 |
1 |
2 |
2 |
3 |
=3
1 |
2 |
1 |
2 |
1 |
3 |
2 |
3 |
=3+3
=6;
(2)原式=-1-
1 |
6 |
=-1-
1 |
6 |
=-1-2
=-3;
(3)原式=(-
7 |
9 |
11 |
12 |
1 |
6 |
=-
7 |
9 |
11 |
12 |
1 |
6 |
=-28-33+6
=-61+6
=-55;
(4)原式=-4-[2-(1+
1 |
6 |
=-4-[2-1
1 |
6 |
=-4-
5 |
6 |
1 |
5 |
=-4-
1 |
6 |
=-4
1 |
6 |
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