计算:
(1) $-\dfrac{8}{9}×(18-\dfrac{3}{4})$；
(2) $(-\dfrac{3}{5}+\dfrac{5}{6})×(-30)$；
(3) $(-\dfrac{5}{6})×(12-2\dfrac{2}{5})$；
(4) $(\dfrac{1}{9}+\dfrac{1}{15}-\dfrac{1}{3})×45$；
(5) $(1\dfrac{3}{4}+\dfrac{7}{12}-\dfrac{7}{6})×(-144)$；
(6) $-\dfrac{3}{4}×(-1\dfrac{1}{3}-0.4+12)$；
(7) $(-24)×(1-\dfrac{3}{4}+\dfrac{1}{6}-\dfrac{5}{8})$；
(8) $(-\dfrac{1}{3}-\dfrac{1}{4}+\dfrac{1}{5}-\dfrac{7}{15})×(-60)$；
(9) $(-4)×(-\dfrac{5}{6}-\dfrac{1}{5}+1\dfrac{1}{4}-\dfrac{11}{12})×15$；
(10) $\dfrac{2}{3}×(-9)×36×(\dfrac{5}{9}-\dfrac{3}{4}+\dfrac{1}{12})$。
日期 用时 错题数 (参考答案见P99)

(1) $-15\dfrac{1}{3}$
(2) $-7$
(3) $-8$
(4) $-7$
(5) $-168$
(6) $-7\dfrac{7}{10}$
(7) $5$
(8) $51$
(9) $42$
(10) $24$