1. 计算:
(1) $( \dfrac{1}{6} + 1\dfrac{1}{3} - 0.75 ) × (-24)$;
(2) $-2^2 + (-4) × ( -\dfrac{1}{2} ) - |-3|$;
(3) $-3^2 - 5 × \dfrac{1}{5} + |-3| - 25 × 0$;
(4) $2\dfrac{2}{9} × ( -1\dfrac{1}{2} )^3 - (-1.2)^2 ÷ 0.4^2$。
(1) $( \dfrac{1}{6} + 1\dfrac{1}{3} - 0.75 ) × (-24)$;
(2) $-2^2 + (-4) × ( -\dfrac{1}{2} ) - |-3|$;
(3) $-3^2 - 5 × \dfrac{1}{5} + |-3| - 25 × 0$;
(4) $2\dfrac{2}{9} × ( -1\dfrac{1}{2} )^3 - (-1.2)^2 ÷ 0.4^2$。
答案
(1)-18 (2)-5 (3)-7 (4)$-16\dfrac{1}{2}$
2. 计算:
(1)$(-2)^{2}×5-(-1)^{96}+1\dfrac{1}{2}÷\dfrac{1}{2}$;
(2)$(-2×\dfrac{1}{2})^{99}×3+[(-3)^{3}-3^{3}]$;
(3)$[4×(0.85-\dfrac{3}{5})]^{100}+(-2)^{2}×1\dfrac{3}{4}$;
(4)$[2^{2}+(-2)^{2}]÷(-2^{2})×(-\dfrac{1}{2})^{2}-2^{2}$;
(5)$[1-(1-0.5)]×[2-(-3)^{2}]$;
(6)$-1^{2}+(1-0.5)÷4×[1-(-7)]$.
(1)$(-2)^{2}×5-(-1)^{96}+1\dfrac{1}{2}÷\dfrac{1}{2}$;
(2)$(-2×\dfrac{1}{2})^{99}×3+[(-3)^{3}-3^{3}]$;
(3)$[4×(0.85-\dfrac{3}{5})]^{100}+(-2)^{2}×1\dfrac{3}{4}$;
(4)$[2^{2}+(-2)^{2}]÷(-2^{2})×(-\dfrac{1}{2})^{2}-2^{2}$;
(5)$[1-(1-0.5)]×[2-(-3)^{2}]$;
(6)$-1^{2}+(1-0.5)÷4×[1-(-7)]$.
答案
(1)22 (2)-57 (3)8 (4)$-4\dfrac{1}{2}$ (5)-3.5 (6)0
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