计算(能简算要简算):35+23-5678-512+1615+18+15+78514-(27-15)-数学

题目简介

计算(能简算要简算):35+23-5678-512+1615+18+15+78514-(27-15)-数学

题目详情

计算(能简算要简算):
3
5
+
2
3
-
5
6
7
8
-
5
12
+
1
6
1
5
+
1
8
+
1
5
+
7
8
5
14
-(
2
7
-
1
5
题型:解答题难度:中档来源:不详

答案

(1)class="stub"3
5
+class="stub"2
3
-class="stub"5
6

=class="stub"18
30
+class="stub"20
30
-class="stub"25
30

=class="stub"38
30
-class="stub"25
30

=class="stub"13
30


(2)class="stub"7
8
-class="stub"5
12
+class="stub"1
6

=class="stub"21
24
-class="stub"10
24
+class="stub"4
24

=class="stub"11
24
+class="stub"4
24

=class="stub"5
8


(3)class="stub"1
5
+class="stub"1
8
+class="stub"1
5
+class="stub"7
8

=(class="stub"1
5
+class="stub"1
5
)+(class="stub"7
8
+class="stub"1
8
),
=class="stub"2
5
+1,
=1class="stub"2
5


(4)class="stub"5
14
-(class="stub"2
7
-class="stub"1
5
),
=class="stub"5
14
-class="stub"2
7
+class="stub"1
5

=class="stub"1
14
+class="stub"1
5

=class="stub"19
70

更多内容推荐