题目内容

计算:
(1)(-2)+(-3)-(+1)-(-6)
(2)-1
1
2
×(
1
3
-1)÷|-
1
13
|

(3)(-
1
3
)×3÷3×(-
1
9
)

(4)(
1
3
-
1
2
)×(-6)+(-
1
2
)2÷(-
1
2
)3
(1)(-2)+(-3)-(+1)-(-6)
=(-2)+(-3)+(-1)+6
=(-6)+6
=0;
(2)-1
1
2
×(
1
3
-1)÷|-
1
13
|
=-
3
2
×(-
2
3
)×13
=1×13
=13;
(3)(-
1
3
)×3÷3×(-
1
9

=-
1
3
×3×
1
3
×(-
1
9

=
1
27

(4)(
1
3
-
1
2
)×(-6)+(-
1
2
2÷(-
1
2
3
=
1
3
×(-6)-
1
2
×(-6)+(-
1
2
-1
=-2+3+(-2)
=-4+3
=-1.
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