1、七年级数学上册计算题天天练 57 6 1 ()()(10) 12(4)2(2) 7 7 1 1 8 ( )( ） 26(30)6(18) 8 8 9 1 (0.9)(200) (4)333 (1)1779 7 1 1 1 ()()0 21(1)2(3 8 9 4 1 1 1 ( )( ) 10(27)4(13) 3 3 5 4 2 ( )(50) (3)342 (1)1031 3 3 (-16)(-15) 8(-3) -14.5(-8) 1 1 ()() 2-1(-101) (-2)432 4 6 163(-24)(-11) 9.8(-8.7)(-3.9)7.4 2 1 1 1 1 4 ()(
2、) 1.7()(8.9) 9 9 9 5 5 5 (3n6) y8(78b) 7x7(8y4c) (3xy)5(8n5b) 1 (82y)c 9(3d5mn7) 3 1 1 (ab)(ef) 4(6ay)3(n7p) 9 7 5n(7n1) n(7n6z)(6z5n) 8(5s10)6s 2(9n5)(3n6) 8(ab2a)(5a5b) 20(abc2a)9(9a4abc) 4(xy8z)(xy2z) 5(pqpr)(6pqpr) 5 x 1 x 0.8x0.57.13x 3 6 6 8 1 8x5x 4(x1)7(x2)16 9 9 1 3 (9x6)x9 9x2(8x)9 3 5 y1
3、y2 9 2.5x1.5(x2)25 3 5 1 2 (24x)(2x2) 4(9x6)9 4 9 5 6 ()()(6) 2(2)3(3) 7 7 1 1 1 ( )( ） 9(21)9(15) 7 8 3 1 (0.3)(900) (1)353 (1)1364 7 1 1 1 ()()0 23(3)3(1 8 6 2 1 1 1 ( )( ) 7(19)2(14) 8 4 6 1 7 ( )(100) (1)343 (1)1897 5 8 (-18)(-9) 20(-4) 6(-23) 1 1 ()() 111(-34) (-5)332 5 2 1113(-22)(-7) 4.3(-2.1
4、)(-2.2)3.4 2 1 1 4 9 8 ()() 9.2()(2.1) 3 6 4 5 5 5 (9y1) x3(34c) 12m5(3n7z) (3mn)5(3y9c) 3 (1010x)z 3(6d9bc2) 2 1 1 (xy)(st) 3(6ax)5(n8p) 2 8 9x(8x4) 5x(4x6z)(6zx) 4(2m4)3m 5(6y7)(5y8) 3(ab9a)(5a8b) 9(abc6a)4(4a6abc) 7(xy3z)(xy7z) 8(pqpr)(2pqpr) 7 x 1 x 0.9x0.17.71.6x 6 4 9 8 1 8x8x 2(x1)4(x5)5 7 6 1 1 (8x8)x1 7x2(20x)7 8 5 y1 y1 6 3.5x8.5(x7)45 2 5 1 2 (44x)(4x3) 5(2x8)7 5 7
