问题 解答题
(1)|-3|+|-10|-|-1|
(2)(+5)-(-3)+(-8);
(3)(+
1
6
)-(+
1
3
)-(-
1
12
).
(4)-3-4+19-11.
答案

(1)原式=3+10-1

=12;

(2)原式=5+3-8

=9;

(3)原式=

1
6
-
1
3
+
1
12

=

2
12
-
4
12
+
1
12
=
-1
12

=-

1
12

(4)原式=-7+19-11

=12-11

=1.

单项选择题
单项选择题