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计算下列各题,能简算的要简算.23+45-3105-47-13767-(1114-12)59+411+611+49.
题目详情
计算下列各题,能简算的要简算.
+
-
5-
-1
-(
-
)
+
+
+
.
2 |
3 |
4 |
5 |
3 |
10 |
5-
4 |
7 |
3 |
7 |
6 |
7 |
11 |
14 |
1 |
2 |
5 |
9 |
4 |
11 |
6 |
11 |
4 |
9 |
▼优质解答
答案和解析
(1)
+
-
=
+(
-
)
=
+
=
;
(2)5-
-1
=5-(
+1
)
=5-2
=3;
(3)
-(
-
)
=
-
=
;
(4)
+
+
+
=(
+
)+(
+
)
=1+
=1
.
2 |
3 |
4 |
5 |
3 |
10 |
=
2 |
3 |
4 |
5 |
3 |
10 |
=
2 |
3 |
1 |
2 |
=
7 |
6 |
(2)5-
4 |
7 |
3 |
7 |
=5-(
4 |
7 |
3 |
7 |
=5-2
=3;
(3)
6 |
7 |
11 |
14 |
1 |
2 |
=
6 |
7 |
2 |
7 |
=
4 |
7 |
(4)
5 |
9 |
4 |
11 |
6 |
11 |
4 |
9 |
=(
5 |
9 |
4 |
9 |
4 |
11 |
6 |
11 |
=1+
10 |
11 |
=1
10 |
11 |
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