题目内容
用自己喜欢的方式计算
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分析:(1)(3)(5)(6)按照先算括号里面的,再算括号外面的顺序解答;
(2)(4)(7)(8)按照从左到右顺序解答.
(2)(4)(7)(8)按照从左到右顺序解答.
解答:解:(1)
-(
-
)
=
-
=
;
(2)
+
-
=
-
=
;
(3)
-(
+
)
=
-
=0;
(4)
-
+
=
+
=
;
(5)
+(
-
)
=
+
=
;
(6)
-(
+
)
=
-
=
;
(7)
+
-
=
-
=
;
(8)
+
-
=
-
=
.
1 |
2 |
3 |
4 |
3 |
8 |
=
1 |
2 |
3 |
8 |
=
1 |
8 |
(2)
1 |
2 |
1 |
4 |
1 |
6 |
=
3 |
4 |
1 |
6 |
=
7 |
12 |
(3)
5 |
6 |
1 |
2 |
1 |
3 |
=
5 |
6 |
5 |
6 |
=0;
(4)
7 |
8 |
5 |
12 |
1 |
6 |
=
11 |
24 |
1 |
6 |
=
5 |
8 |
(5)
2 |
3 |
1 |
2 |
1 |
4 |
=
2 |
3 |
1 |
4 |
=
11 |
12 |
(6)
4 |
3 |
2 |
5 |
3 |
10 |
=
4 |
3 |
7 |
10 |
=
19 |
30 |
(7)
5 |
7 |
1 |
4 |
9 |
14 |
=
27 |
28 |
9 |
14 |
=
9 |
28 |
(8)
3 |
4 |
3 |
6 |
5 |
8 |
=
5 |
4 |
5 |
8 |
=
5 |
8 |
点评:本题考查知识点:依据四则运算计算方法正确进行计算.
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