初一数学上册计算题大全254.docx

1、初一数学上册计算题大全254 4 3 ()()(1) 25(4)3(1) 7 7 8 1 2 ( )( ） 8(18)9(10) 9 8 3 1 (0.5)(2) (5)453 (1)2141 9 1 1 1 ()()0 18(3)3(5 8 9 9 1 1 4 ( )( ) 5(30)9(18) 2 8 5 3 1 ( )(50) (3)312 (1)2597 4 5 (-4)(-13) 18(-15) 9.5(-23.5) 1 1 ()() 20-2(-109) (-5)343 5 7 3514(-20)(-12) -4.5(-3.2)(-2.3)4 2 1 1 2 3 3 ()() 4.

2、6()(9.2) 9 7 6 7 5 5 (7y2) z7(48a) 11m8(3n8t) (6mn)5(5y3a) 3 (204z)t 7(5a9xy4) 4 1 1 (xy)(pq) 2(8bx)7(n5p) 9 9 5b(6b7) 3b(7b3z)(3z6b) 7(9s7)5s 4(8y7)(5y9) 4(ab3a)(8a4b) 14(abc8a)5(7a6abc) 8(xy2z)(xy3z) 8(pqpr)(8pqpr) 5 x 1 x 0.2x0.64.22.4x 3 8 9 4 1 4x7x 6(x9)9(x7)6 5 3 1 3 (2x1)x4 9x2(9x)7 6 5 y3 y

3、2 7 1.5x10(x7)20 3 5 1 2 (33x)(4x4) 5(3x4)13 2 5 4 4 ()()(2) 13(3)3(2) 7 7 10 1 1 ( )( ） 14(26)3(13) 9 6 7 1 (0.9)(1000) (2)242 (1)1709 9 1 1 1 ()()0 26(2)3(1 4 4 8 1 1 3 ( )( ) 9(11)3(15) 8 8 2 1 8 ( )(40) (2)342 (1)1583 5 7 (-1)(-16) 0(-9) 9(-18.5) 1 1 ()() 104(-105) (-5)334 4 6 -2217(-13)(-16) -4

4、.5(-8.3)(-2.7)3 2 1 1 1 3 3 ()() 4.3()(3.4) 5 6 6 7 5 5 (4b5) x6(69a) 12m7(8y8t) (6my)3(6b8a) 1 (124x)t 2(4b9ab6) 9 1 1 (xy)(ef) 3(7ax)4(m8p) 8 9 4a(3a5) 6a(6a3c)(5c6a) 2(7s7)7s 6(5n1)(2n7) 4(ab9a)(5a2b) 20(abc8a)2(7a2abc) 7(xy7z)(xy6z) 7(pqpr)(4pqpr) 7 x 1 x 0.2x0.85.99.6x 9 8 6 2 1 9x5x 5(x2)3(x7)10 9 7 1 4 (2x3)x8 9x9(7x)3 7 5 y1 y3 6 0.5x10(x2)15 2 6 1 2 (44x)(3x5) 6(6x2)16 4 9