题目内容

计算:
(1)3
1
2
+(-
1
2
)-(-
1
3
)+2
2
3

(2)(-5)×6+(-125)÷(-5)
(3)-82+3×(-2)2+(-6)÷(-
1
3
)2

(4)-2×(-
1
2
)2+|-(-2)|3-(-
1
2
)
(1)3
1
2
+(-
1
2
)-(-
1
3
)+2
2
3

=3
1
2
-
1
2
+
1
3
+2
2
3

=3+3
=6;
(2)(-5)×6+(-125)÷(-5)
=-30+25
=-5;
(3)-82+3×(-2)2+(-6)÷(-
1
3
)
2

=-64+3×4+(-6)×9
=-64+12-54
=-106;
(4)-2×(-
1
2
)2+|-(-2)|3-(-
1
2
)

=-2×
1
4
+8+
1
2

=-
1
2
+8+
1
2

=8.
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