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计算(1)(-3)+(-4)-(11)-(-9)(2)(-81)÷214×(-49)÷(-1

2022-08-15 16:07:43 问答库 阅读 206 次

问题详情

计算
(1)(-3)+(-4)-(11)-(-9)
(2)(-81)÷21

4

×(-4

9

)÷(-16)
(3)8-23÷(-4)3-1

8


(4)-32×2-3×(-2)2
(5)(1

2

-5

9

+5

6

-7

12

)×(-36)

参考答案

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

(2)(-81)÷214×(-49)÷(-16)
=-81×49×49×116
=-1;

(3)8-23÷(-4)3-18
=8+8÷64-18
═8+18-18
=8;

(4)-32×2-3×(-2)2
=-9×2-3×4
=-18-12
=-30;

(5)(12-59+56-712)×(-36)
=-18+20-30+21
=-48+41
=-7.

考点: