问题 解答题
计算:
(1)8-(-2)2×(-3)-(-5)2     
(2)-24-(-4)2×(-1)+(-3)2
(3)(-2)×(81×
1
2
)×(-
2
9
)
        
(4)(-10+
1
10
-
1
2
)×10.
答案

(1)原式=8-4×(-3)-25

=8+12-25

=-5;

(2)原式=-16-16×(-1)+9

=-16+16+9

=9;

(3)原式=(-2)×81×

1
2
×(-
2
9

=18;

(4)原式=10×(-10)+10×

1
10
-10×
1
2

=-100+1-5

=-104.

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