问题 解答题
计算
(1)0.5+(-
1
4
)-2.75+(-
1
2

(2)10÷[
1
2
-(-1+1
1
3
)]×6
(3)-32÷(-3)2+3×(-2)+|-4|
(4)-13-(1-0.5)×
1
3
×
[3-(-3)2]
(5)-7×(-
22
7
)+19×(-
22
7
)-5×(-
22
7

(6)-99
16
17
×34.
答案

(1)原式=0.5-

1
4
-2.75-
1
2

=0.5-

1
2
-
1
4
-2.75

=0-3

=-3;

(2)原式=10÷[

1
2
-
1
3
)×6

=10×6×6

=360;

(3)原式=-9÷9-6+4

=-1-6+4

=-7+4

=-3;

(4)原式=-1-

1
2
×
1
3
×
[3-9]

=1-

1
2
×
1
3
×(-6)

=1+1

=2;

(5)原式=(-7+19-5)×(-

22
7

=7×(-

22
7

=-22;

(6)(-100+

1
17
)×34

=-100×34+

1
17
×34

=-3400+2

=-3398.

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