初中数学计算题专项练习

1、计算题：第一部分(1) (-x)2·(-x)3 (2) 10×102×103(3) x2m+1·xm·x (4) a·(b+1)3·a2·(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) (-y4)3 + (y3)4 (10) (xy2)2 (11) a3·a4·a +(a2)4 +(-2a4)2 (12) 2(x3)2·x3(3x3)3

2、 + (5x)2·x7(13) (14) (15) (-8)2016×0.1252015 (16) 0.5202×2201×(-1)201(17) (-3xy4)3 (18) (-x)2m+2 ÷(-x)2(19) (-x2y)4 ÷(-x2y)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)-38-1×(-1)-2×(2)0 (24) x20÷(-x2)32

3、x2·(-x)3÷(-x2)2(25) (26) 第二部分(1) 3x2y·(-2xy3z) (2) 3a3·4b4(3) (4×105)×(5×106) (4) -6m2n·(x-y)3·mn2·(y-x)2(5) (6) (7) 5x3y·(-3y)2 + (-6xy)2·(-xy) + xy3·(-4x)2(8) 0.4x2y·(0.5xy)2 (-2x)3·xy3 (9) (-5an-1b)(-2a) (10) (-3ab)(-a2c)2

4、·6ab(c2)3(11) 3(x-y)2·-2(x-y)3·4(x-y)(12) (-4x)·(2x2+3x-1) (13) (4ab2-2ab) ·2ab(14) x2(x2-x+1) - x(x3-x2+x-1) (15) (-2x3y)·(3xy2-3xy+1) (16) 2x(3x2+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) (-a2)(a+1)-(a+2)(a-1) (23) 5x2-(x-2

5、)(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第三部分(1) (2)(3) (4) (5) (6) (7) (8) (9) (10)(11) (12)(13) (14) (15) (16)(17) (18) (19) (20) (21) (22) 第四部分(1) (2) (3) (4) (5) (6) (7) (8)(9) (