问题 解答题
(1)
18
-
72
+
50

(2)
12
+
327

(3)
8
+
2
2
-2

(4)
12
×
6
24

(5)(
7
+
3
)(
7
-
3
)-
16
答案

(1)原式=3

2
-6
2
+5
2

=2

2

(2)原式=2

3
+3;

(3)原式=

4
+1-2

=2+1-2

=1;

(4)原式=

72
24

=

3

(5)原式=7-3-4

=0.

判断题
选择题