问题 解答题
(1)(-5)-(+7)-(-6)+4
(2)-0.5-(-3
1
4
)+2.75-(+7
1
2

(3)-32-(-2)3×4÷|-
1
4
|
答案

(1)原式=-5-7+6+4

=-12+10

=-2;

(2)原式=-0.5+3.25+2.75-7.5

=-8+6

=-2;

(3)原式=-9+8×4×4

=-9+128

=119.

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