问题 解答题
计算
(1)1+(-2)+|-2-3|-5-(-9)
(2)
11
3
×(
1
3
-
1
2
3
11
÷
5
4

(3)(
5
12
+
2
3
-
3
4
)×(-12)

(4)0.25×(-2)3-[4÷(-
2
3
)2+1]+(-1)5
答案

(1)1+(-2)+|-2-3|-5-(-9)

=1-2+5-5+9

=-1+0+9

=8;

(2)

11
3
×(
1
3
-
1
2
3
11
÷
5
4

=

11
3
×(-
1
6
)×
3
11
×
4
5

=

11
3
×
11
3
×(-
1
6
)×
4
5

=1×(-

2
15

=-

2
15

(3)(

5
12
+
2
3
-
3
4
)×(-12)

=-

5
12
×12-
2
3
×12+
3
4
×12

=-5-8+9

=-4;

(4)0.25×(-2)3-[4÷(-

2
3
)2+1]+(-1)5

=-0.25×8-[4×

9
4
+1]-1

=-2-[9+1]-1

=-2-10-1

=-13.

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