计算(1)-16+23+(-17)-(-7)(2)0-12-(-34)+(-56)-23(3)25÷(-225)-821×(-134)-0.5÷2×72(4)[212-(79-1112+16)×36]

题目简介

计算(1)-16+23+(-17)-(-7)(2)0-12-(-34)+(-56)-23(3)25÷(-225)-821×(-134)-0.5÷2×72(4)[212-(79-1112+16)×36]

题目详情

计算
(1)-16+23+(-17)-(-7)
(2)0-
1
2
-(-
3
4
)+(-
5
6
)-
2
3

(3)
2
5
÷(-2
2
5
)
-
8
21
×(-1
3
4
)
-0.5÷2×
7
2

(4)[2
1
2
-(
7
9
-
11
12
+
1
6
)×36]÷5.
题型:解答题难度:中档来源:不详

答案

(1)-16+23+(-17)-(-7)
=-16+23-17+7
=-33+30
=-3;

(2)0-class="stub"1
2
-(-class="stub"3
4
)+(-class="stub"5
6
)-class="stub"2
3

=-class="stub"6
12
+class="stub"9
12
-class="stub"10
12
-class="stub"8
12

=-1class="stub"1
4


(3)class="stub"2
5
÷(-2class="stub"2
5
)
-class="stub"8
21
×(-1class="stub"3
4
)
-0.5÷2×class="stub"7
2

=-class="stub"1
6
+class="stub"2
3
-class="stub"1
2
×class="stub"1
2
×class="stub"7
2

=-class="stub"1
6
+class="stub"2
3
-class="stub"7
8

=-class="stub"3
8


(4)[2class="stub"1
2
-(class="stub"7
9
-class="stub"11
12
+class="stub"1
6
)×36]÷5
=[2class="stub"1
2
-(28-33+6)]÷5
=[2class="stub"1
2
-1]÷5
=class="stub"3
2
÷5
=class="stub"3
10

更多内容推荐