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计算:(1)(-3)+(-4)-(11)-(-9);(2)-16×5-16×(-4)+16×

2022-08-15 10:58:37 问答库 阅读 205 次

问题详情

计算:
(1)(-3)+(-4)-(11)-(-9);
(2)-1

6

×5-1

6

×(-4)+1

6

×(-8);
(3)-6÷(-0.25)×11

24

÷2;
(4)[-32×(-1

3

)2-0.8]×41

2

÷(-51

4

).

参考答案

(1)原式=(-3)+(-4)+(-11)+(+9),
=-18+9,
=-9;

(2)原式=-56-(-46)+(-86),
=-56+(+46)+(-86),
=-32;

(3)原式=-6×(-4)×1124×12,
=24×1124×12,
=112;

(4)原式=[-9×19-45]×92÷(-214),
=-95×92×(-421),
=5435.

考点: