问题 解答题
计算:
(1)-2-3-5
(2)(-2)÷
1
3
×(-3)

(3)(
2
3
-
1
12
-
4
15
)×(-60)

(4)-14+8-23÷(-4)×(-7+5)
(5)100-(-3)÷(
3
4

(6)-11-2×(-33)+(-22)
(7)-32÷[-32-(-2)3].
答案

(1)-2-3-5

=-(2+3+5)

=-10;

(2)(-2)÷

1
3
×(-3)

=-6×(-3)

=18;

(3)(

2
3
-
1
12
-
4
15
)×(-60)

=-

2
3
×60+
1
12
×60+
4
15
×60

=-40+5+16

=-19;

(4)-14+8-23÷(-4)×(-7+5)

=-1+8-8÷(-4)×(-2)

=-1+8-4

=3;

(5)100-(-3)÷(

3
4

=100+4

=104;

(6)-11-2×(-33)+(-22)

=-11-66-22

=-99;

(7)-32÷[-32-(-2)3]

=-32÷[-9+8]

=-32÷[-1]

=32.

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