脱式计算,能简算的要简算.12-(34-38)23+(12-16)314+513+81349+17+59+67478-711+18-41135-1120+34.-数学

题目简介

脱式计算,能简算的要简算.12-(34-38)23+(12-16)314+513+81349+17+59+67478-711+18-41135-1120+34.-数学

题目详情

脱式计算,能简算的要简算.
1
2
-(
3
4
-
3
8
)

2
3
+(
1
2
-
1
6
)

3
14
+
5
13
+
8
13

4
9
+
1
7
+
5
9
+
6
7

4
7
8
-
7
11
+
1
8
-
4
11

3
5
-
11
20
+
3
4
题型:解答题难度:中档来源:不详

答案

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

=class="stub"1
8


(2)class="stub"2
3
+(class="stub"1
2
-class="stub"1
6
),
=class="stub"2
3
+class="stub"1
3

=1;

(3)class="stub"3
14
+class="stub"5
13
+class="stub"8
13

=class="stub"3
14
+(class="stub"5
13
+class="stub"8
13
),
=class="stub"3
14
+1,
=1class="stub"3
14


(4)class="stub"4
9
+class="stub"1
7
+class="stub"5
9
+class="stub"6
7

=(class="stub"4
9
+class="stub"5
9
)+(class="stub"1
7
+class="stub"6
7
),
=1+1,
=2;

(5)4class="stub"7
8
-class="stub"7
11
+class="stub"1
8
-class="stub"4
11

=(4class="stub"7
8
+class="stub"1
8
)-(class="stub"7
11
+class="stub"4
11
),
=5-1,
=4;

(6)class="stub"3
5
-class="stub"11
20
+class="stub"3
4

=class="stub"1
20
+class="stub"3
4

=class="stub"4
5

更多内容推荐