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计算下面各题49+110+5915+715+415710-(34-25)137-512-7122324-16-38112+38+1112+58.
题目详情
计算下面各题
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1
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▼优质解答
答案和解析
(1)
+
+
=
+
+
=
;
(2)
+
+
=
+
=
;
(3)
-(
-
)
=
-
=
;
(4)1
-
-
=1
-(
+
)
=
-1
=
;
(5)
-
-
=
-
-
=
;
(6)
+
+
+
=(
+
)+(
+
)
=1+1
=2.
4 |
9 |
1 |
10 |
5 |
9 |
=
4 |
9 |
5 |
9 |
1 |
10 |
=
1
|
(2)
1 |
5 |
7 |
15 |
4 |
15 |
=
3 |
15 |
11 |
15 |
=
14 |
15 |
(3)
7 |
10 |
3 |
4 |
2 |
5 |
=
14 |
20 |
7 |
20 |
=
7 |
20 |
(4)1
3 |
7 |
5 |
12 |
7 |
12 |
=1
3 |
7 |
5 |
12 |
7 |
12 |
=
1
|
=
3 |
7 |
(5)
23 |
24 |
1 |
6 |
3 |
8 |
=
23 |
24 |
4 |
24 |
9 |
24 |
=
5 |
12 |
(6)
1 |
12 |
3 |
8 |
11 |
12 |
5 |
8 |
=(
1 |
12 |
11 |
12 |
3 |
8 |
5 |
8 |
=1+1
=2.
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