问题 解答题
计算:
(1)|-5-4|-(+5)×(-2)2-1×(-3)
(2)-1100-(1-0.5)×
1
3
×[3-(-3)2]
答案

(1)|-5-4|-(+5)×(-2)2-1×(-3),

=9-20-(-3),

=-8;

(2)-1100-(1-0.5)×

1
3
×[3-(-3)2],

=-1-

1
2
×
1
3
×(-6),

=1-(-1),

=2.

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