《2025年名校课堂七年级数学上册人教版》

计算：
(1)$-0.75×(-\frac {3}{2})÷(-\frac {9}{4})$.
(2)$3×(-1)+2^{2}+|-4|$.
(3)$(-1)×(-4)+3^{2}÷(7-4)$.
(4)$(-5)×3\frac {1}{3}+2×3\frac {1}{3}+(-6)×3\frac {1}{3}$.
(5)$(-6)^{2}×[-\frac {1}{4}+(-\frac {2}{9})-(-\frac {7}{18})]$.
(6)$(-1)^{4}×|-8|+(-2)^{3}×(\frac {1}{2})^{2}$.
(7)$4+16÷(-2)^{3}×|-3-1|$.
(8)$(-5)^{3}×(-\frac {3}{5})+32÷(-2^{2})×(-1\frac {1}{4})$.
(9)$-1^{2026}+8÷(-2)^{2}-|-4|×5$.
(10)$(-4)^{2}-(1-\frac {2}{3})÷2\frac {1}{3}×[6+(-3)^{3}]$.

答案：
(1)原式$= -\frac{3}{4} × (-\frac{3}{4}) × (-\frac{4}{9}) = -\frac{1}{2} (2)$原式= -3 + 4 + 4 = 5
(3)原式= (-1) × (-4) + 9 ÷ 3 = 4 + 3 = 7
(4)原式$= [(-5) + 2 + (-6)] × 3 × \frac{1}{3} = (-9) × \frac{10}{3} = -30 (5)$原式$= 36 × (-\frac{1}{4} + \frac{2}{9} + \frac{7}{18}) = 36 × (-\frac{1}{4}) + 36 × (-\frac{2}{9}) + 36 × \frac{7}{18} = -9 - 8 + 14 = -3 (6)$原式$= 1 × 8 - 8 × \frac{1}{4} = 8 - 2 = 6 (7)$原式= 4 + 16 ÷ (-8) × 4 = 4 + (-2) × 4 = 4 + (-8) = -4
(8)原式$= (-125) × (-\frac{3}{5}) ÷ 32 ÷ (-4) × (-\frac{5}{4}) = 75 + (-8) × (-\frac{5}{4}) = 75 + 10 = 85 (9)$原式= -1 + 8 ÷ 4 - 4 × 5 = -1 + 2 - 20 = -19
(10)原式$= 16 - \frac{1}{3} ÷ \frac{7}{3} × (6 - 27) = 16 - \frac{1}{3} × \frac{3}{7} × (-21) = 16 + 3 = 19$