问题 解答题
计算:
(1)(-48)÷(-2)3-(-25)×(-4)+(-2)2
(2)[1
2
3
-(
1
3
-
1
6
+
5
12
)×2.4]÷5
答案

(1)(-48)÷(-2)3-(-25)×(-4)+(-2)2

=48÷8-100+4

=6-100+4

=-90;

(2)[1

2
3
-(
1
3
-
1
6
+
5
12
)×2.4]÷5

=[1

2
3
-
1
3
×2.4+
1
6
×2.4-
5
12
×2.4]÷5

=[1

2
3
-0.8+0.4-1]÷5

=

4
15
÷5

=

4
75

判断题
填空题