(完整)初中数学计算题专项练习

计算题：第一部分

(1) (-x)2·(-x)3 (2) 10×102×103 (3) x 2m+1·x m ·x (4) a·(b+1)3·a 2·(b+1) (5) 3×34×9 (6) (x -2y)2·(2y -x)5 (7) (-y+x)·(y -x) (8) (a+2b)3·(2b+a)4 (9) (-y 4)3 + (y 3)4 (10) (xy 2)2

(11) a 3·a 4·a +(a 2)4 +(-2a 4)2 (12) 2(x 3)2·x 3－(3x 3)3 + (5x)2·x 7

(13) (14)

(15) (-8)2016×0.1252015 (16) 0.5202×2201×(-1)201 (17) (-3xy 4)3 (18) (-x)2m+2 ÷(-x)2

(19) (-x 2y)4 ÷(-x 2y)3 (20) (xy)10÷(-xy)2÷(xy)3 (21) (7×8)0 × 10-2 (22) 0.5-1 + |1-2|＋(2-1)3

(23) [(-2)-3－8-1×(-1)-2]×(π－2)0 (24) x 20÷[(-x 2)3]2－x 2·(-x)3÷(-x 2)2 (25) (26)

4

646(-4)×)125(×0.25×522-）（71491-3）（?|21-|＋61×－351-－π-61-0

）（）（22017

0)41(|-2|-1--2016-π--+）（）（

(1) 3x 2y ·(-2xy 3z) (2) 3a 3·4b 4

(3) (4×105)×(5×106) (4) -6m 2n ·(x -y)3·mn 2·(y -x)2 (5) (6) (7) 5x 3y ·(-3y)2 + (-6xy)2·(-xy) + xy 3·(-4x)2 (8) 0.4x 2y ·(0.5xy)2 －(-2x)3·xy 3

(9) (-5a n -1b)(-2a) (10) (-3ab)(-a 2c)2·6ab(c 2)3 (11) [3(x -y)2]·[-2(x -y)3]·[4(x -y)]

(12) (-4x)·(2x 2+3x -1) (13) (4ab 2-2ab) ·2ab

(14) x 2(x 2-x+1) - x(x 3-x 2+x -1) (15) (-2x 3y)·(3xy 2-3xy+1) (16) 2x(3x 2+1) (17) (2x -3)(x+4) (18) (3x+y)(x -2y) (19) (2a -3b)(a+5b) (20) (a+b)2 (21) (a+b)(a -b)

(22) (-a 2)(a+1)-(a+2)(a -1) (23) 5x 2-(x -2)(3x+1) -2(x+1)(x -5) (24) (2x -3y)(3x -4y) (25) (2a+1)(a -2) (26) (a -2)2(a+2)2 (27) 59.8 × 60.2 (28) (3a -b)(-b -3a) (29) (3a+2b)(3a -2b) (30) 1012 (31) 1992 －200×198 (32) (-2a -3b)2 (33) (3-x)(3+x) + (x+1)2

2223)xy 23(-x 32?y )31()(x 3-22

2xy ab axy y ?-?）（

(1) (2)

(3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)

(15) (16) (17) (18) (19) (20)

(21) (22)

22

2)(x y x y --3

24515-y x xy y xy 24

x 2

+-2

22y xy x y x +--2

2

2

69a 3b ab a ab +--b a b ---2

2a 2

2222x 2y x y -+2

42-x x 2--x 214a 22---a a x

x --+11

1-x 22221y x 1y

x x

y x -+--+x z y x +-z -y 96939x 2222++-+++x x x x x x 2

222222x 2x y y

x y y x y x -+----b a x x b a 4

22

489154?x x 11x -+222)2(2)2()4(-?+-a a a a 11

312----a a a a 2)2(2-÷-a a a a 913a -12

-÷a 2)1()1(1-?-÷-a a a a a 2

11a a a a -÷-

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)

(13) (14) (15) (16)

(17) (18) (19) (20)

(21) (22) (23) (24) (25) (26) 73?94?30011214?）（32276-?)0,0,0(200345≥≥≥c b a c b a )0,0(42

24≥≥

+b a b a b a 648÷945144125

81?)0,0(16b 12125

>>b a a )0,0(),4(43>>-÷b a b

a b a 2

77722)

0(,321623>+a a a )

0,0,0(,4223>>>c b a c b a 2240-412

4x x +)0,0(,4

9123>>?b a a ab ）（7225-283212?÷82+）（863+8350-18+）

（2733+)0(,435813

3>+-a a a a a a ）

（）（231218-32+?