问题 解答题
(1)(-7)-(-8)
(2)5.6-7+3.4
(3)12×(
1
4
-
2
3
-
1
2
)

(4)-32×(-
1
3
)-24÷(-
1
2
)
答案

(1)原式=(-7)+8

=1;

(2)原式=5.6+3.4-7

=9-7

=2;

(3)原式=12×

1
4
-12×
2
3
-12×
1
2

=3-8-6

=-11;

(4)原式=-9×(-

1
3
)-16÷(-
1
2

=3+32

=35.

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