问题 解答题
计算:
①8+(-10)+(-2)-(-5)
②(-5)÷(-
5
4

③-36÷(-6)-72÷(-8)
④8×(-
4
5
)÷|-16|
⑤(-24)×(-
1
2
+
3
4
-
1
3
)    
⑥(-
1
2
)+(-
3
4
)-(-1
3
4
)+(+1.5)
⑦18×(-
2
3
)+13×
2
3
-4×
2
3
           
⑧-32-[1-(-2)3]÷(-3)
答案

①8+(-10)+(-2)-(-5)

=8-10-2+5

=1;

②(-5)÷(-

5
4
)=4;

③-36÷(-6)-72÷(-8)

=6+9

=15;

④8×(-

4
5
)÷|-16|

=8×(-

4
5
)÷16

=-10÷16

=-

5
8

⑤(-24)×(-

1
2
+
3
4
-
1
3

=12-18+8

=2;

    

⑥(-

1
2
)+(-
3
4
)-(-1
3
4
)+(+1.5)

=(-

1
2
+1.5)+(-
3
4
+1
3
4

=1+1

=2;

⑦18×(-

2
3
)+13×
2
3
-4×
2
3
  

=(-18+13-4)×

2
3

=-9×

2
3

=-6;   

  

⑧-32-[1-(-2)3]÷(-3)

=-9-[1+8]÷(-3)

=-9-9÷(-3)

=-9+3

=-6.

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