1. 口算:
(1)$(-1)^{5}=$
-1
; (2)$(-1)^{2024}=$
1
; (3)$(-0.1)^{2}=$
0.01
;
(4)$(-3)^{2}=$
9
; (5)$-(-3)^{2}=$
-9
; (6)$-3^{2}=$
-9
;
(7)$(-\frac {1}{6})^{2}=$
$\frac{1}{36}$
; (8)$(-\frac {2}{5})^{3}=$
$-\frac{8}{125}$
; (9)$(-0.01)^{3}=$
-0.00001
;
(10)$\frac {-3^{2}}{6}=$
$-\frac{3}{2}$
; (11)$(\frac {3}{2})^{4}=$
$\frac{81}{16}$
; (12)$-[+(-2)]^{6}=$
-64
.
答案:(1)-1 (2)1 (3)0.01 (4)9 (5)-9 (6)-9 (7)$\frac{1}{36}$ (8)$-\frac{8}{125}$ (9)-0.00001 (10)$-\frac{3}{2}$ (11)$\frac{81}{16}$ (12)-64
2. 计算:
(1)$-2^{2}×(-2)^{2}$; (2)$-3^{3}×(-\frac {1}{3})^{3}$;
(3)$(-2)^{2024}×(\frac {1}{2})^{2024}$; (4)$(-2)^{3}÷4×(-1)^{100}×5$;
(5)$(-1)^{2024}÷\frac {8}{3}×(-2)^{3}$; (6)$-2^{3}÷\frac {4}{9}×(-\frac {2}{3})^{2}$;
(7)$-3^{2}×(-8)÷3÷(-2)$; (8)$(-3)^{2}÷(1\frac {1}{2})^{2}×\frac {1}{3}$.
答案:(1)-16 (2)1 (3)1 (4)-10 (5)-3 (6)-8 (7)-12 (8)$\frac{4}{3}$
解析:
(1) 解:$-2^{2}×(-2)^{2}=-4×4=-16$
(2) 解:$-3^{3}×(-\frac {1}{3})^{3}=-27×(-\frac {1}{27})=1$
(3) 解:$(-2)^{2024}×(\frac {1}{2})^{2024}=(-2×\frac {1}{2})^{2024}=(-1)^{2024}=1$
(4) 解:$(-2)^{3}÷4×(-1)^{100}×5=-8÷4×1×5=-2×5=-10$
(5) 解:$(-1)^{2024}÷\frac {8}{3}×(-2)^{3}=1×\frac {3}{8}×(-8)=\frac {3}{8}×(-8)=-3$
(6) 解:$-2^{3}÷\frac {4}{9}×(-\frac {2}{3})^{2}=-8×\frac {9}{4}×\frac {4}{9}=-8×(\frac {9}{4}×\frac {4}{9})=-8×1=-8$
(7) 解:$-3^{2}×(-8)÷3÷(-2)=-9×(-8)÷3÷(-2)=72÷3÷(-2)=24÷(-2)=-12$
(8) 解:$(-3)^{2}÷(1\frac {1}{2})^{2}×\frac {1}{3}=9÷(\frac {3}{2})^{2}×\frac {1}{3}=9÷\frac {9}{4}×\frac {1}{3}=9×\frac {4}{9}×\frac {1}{3}=4×\frac {1}{3}=\frac {4}{3}$