用递等式计算:35+310;1-(38+14);25+110+415;56-45+13;23-17-27;34+111-34+611.-数学

题目简介

用递等式计算:35+310;1-(38+14);25+110+415;56-45+13;23-17-27;34+111-34+611.-数学

题目详情

用递等式计算:
3
5
+
3
10
1-(
3
8
+
1
4
);
2
5
+
1
10
+
4
15
5
6
-
4
5
+
1
3
2
3
-
1
7
-
2
7
3
4
+
1
11
-
3
4
+
6
11
题型:解答题难度:中档来源:不详

答案

(1)class="stub"3
5
+class="stub"3
10

=class="stub"6
10
+class="stub"3
10

=class="stub"9
10


(2)1-(class="stub"3
8
+class="stub"1
4
),
=1-class="stub"5
8

=class="stub"3
8


(3)class="stub"2
5
+class="stub"1
10
+class="stub"4
15

=class="stub"1
2
+class="stub"4
15

=class="stub"23
30


(4)class="stub"5
6
-class="stub"4
5
+class="stub"1
3

=class="stub"5
6
+class="stub"1
3
-class="stub"4
5

=class="stub"7
6
-class="stub"4
5

=class="stub"11
30


(5)class="stub"2
3
-class="stub"1
7
-class="stub"2
7

=class="stub"2
3
-(class="stub"1
7
+class="stub"2
7
),
=class="stub"2
3
-class="stub"3
7

=class="stub"5
21


(6)class="stub"3
4
+class="stub"1
11
-class="stub"3
4
+class="stub"6
11

=(class="stub"3
4
-class="stub"3
4
)+(class="stub"1
11
+class="stub"6
11
),
=0+class="stub"7
11

=class="stub"7
11

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