登录
1. 计算:
(1) $(-\dfrac{7}{9}+\dfrac{5}{6}-\dfrac{3}{4})÷\dfrac{1}{36}-8÷(-2)$;
(2) $(-2)^4×(-1\dfrac{1}{2})^2+(-3)^3÷1\dfrac{4}{5}$.
(1) $(-\dfrac{7}{9}+\dfrac{5}{6}-\dfrac{3}{4})÷\dfrac{1}{36}-8÷(-2)$;
(2) $(-2)^4×(-1\dfrac{1}{2})^2+(-3)^3÷1\dfrac{4}{5}$.
答案
(1) -21
(2) 21
(2) 21
2. 计算:
(1) $-\dfrac{3^2}{2} × (-2) + 4^2 + (-2 × 3)^3 - |-2^2| ÷ 4$；
(2) $-3 - [-5 + (1 - 0.2 × \dfrac{5}{3}) ÷ (-2)]$；
(3) $-10^2 + [(-4)^2 + (3 × 3^2) × 2 + 10] ÷ (-2)^3$；
(4) $-36 × (\dfrac{2}{3} + \dfrac{3}{4} - \dfrac{1}{12}) - [2 - (-1)^{98}] ÷ (-\dfrac{2}{5}) × \dfrac{5}{2}$。
(1) $-\dfrac{3^2}{2} × (-2) + 4^2 + (-2 × 3)^3 - |-2^2| ÷ 4$；
(2) $-3 - [-5 + (1 - 0.2 × \dfrac{5}{3}) ÷ (-2)]$；
(3) $-10^2 + [(-4)^2 + (3 × 3^2) × 2 + 10] ÷ (-2)^3$；
(4) $-36 × (\dfrac{2}{3} + \dfrac{3}{4} - \dfrac{1}{12}) - [2 - (-1)^{98}] ÷ (-\dfrac{2}{5}) × \dfrac{5}{2}$。
答案
(1) -192
(2) $2\dfrac{1}{3}$
(3) -110
(4) $-\dfrac{167}{4}$
(2) $2\dfrac{1}{3}$
(3) -110
(4) $-\dfrac{167}{4}$
