一、填空题
1. $(-49)÷7=$
2. $(+4)÷(-\dfrac{1}{8})=$
3. $(-27)÷(-9)=$
4. $(-1.6)÷(-0.4)=$
5. $(-8)÷\dfrac{4}{5}=$
6. $(-\dfrac{2}{9})÷(-4)=$
7. $(-7.6)÷0.5=$
8. $0÷(-817)=$
9. $(-3)÷(-1\dfrac{1}{2})=$
10. $(\_\_\_\_\_\_)÷(+5\dfrac{1}{2})=-1$

1. -7
2. -32
3. 3
4. 4
5. -10
6. $\dfrac{1}{18}$
7. -15.2
8. 0
9. 2
10. $-5\dfrac{1}{2}$

二、计算题
11. $(-27)÷(+\dfrac{3}{2})$
12. $(-8\dfrac{8}{9})÷(-8)$
13. $0÷8÷(-1\dfrac{4}{5})$
14. $(+6\dfrac{2}{3})÷(-1\dfrac{2}{3})$
15. $(-0.25)÷(+\dfrac{2}{3})÷(-\dfrac{5}{16})$
16. $(-1\dfrac{2}{5})÷(-15)÷(-\dfrac{7}{3})$
17. 一题多解 $[(+\dfrac{1}{6})-(-\dfrac{1}{18})]÷(-\dfrac{1}{54})$
18. $(-42)÷(+\dfrac{3}{2})-(-27)÷(+\dfrac{3}{11})$

11. -18
12. $1\dfrac{1}{9}$
13. 0
14. -4
15. $\dfrac{6}{5}$
16. $-\dfrac{1}{25}$
17. 解法一 原式$=(\dfrac{3}{18}+\dfrac{1}{18})×(-54)=\dfrac{2}{9}×(-54)=-12.$
解法二 原式$=(\dfrac{1}{6}+\dfrac{1}{18})÷(-\dfrac{1}{54})=\dfrac{1}{6}÷(-\dfrac{1}{54})+\dfrac{1}{18}÷(-\dfrac{1}{54})=\dfrac{1}{6}×(-54)+\dfrac{1}{18}×(-54)=-9+(-3)=-12.$
18. 71