1、七年级数学上册计算题天天练 46 3 1 ()()(3) 18(1)3(2) 7 7 1 1 6 ( )( ) 2(17)9(11) 5 6 7 1 (0.7)(70) (4)242 (1)1972 5 1 1 1 ()()0 17(2)2(3 9 4 2 1 1 6 ( )( ) 16(22)7(16) 2 2 5 5 1 ( )(50) (4)343 (1)1413 6 3 (-12)(-20) 14(-12) -9.5(-17) 1 1 ()() -200(-810) (-5)354 8 7 112(-21)(-16) -8(-4.4)(-4.1)5.2 2 1 1 2 1 4 ()()
2、 8.2()(2.2) 5 4 3 7 5 5 (7b2) y9(82b) 6x4(8n3t) (2xn)6(7b5b) 6 (108y)t 3(9d3ab4) 7 1 1 (ab)(mn) 2(9bx)9(m2q) 9 9 4a(4a7) a(8a4s)(6sa) 2(3s5)5s 10(7y5)(2y4) 3(ab9a)(8a5b) 19(abc5a)6(5a4abc) 4(xy8z)(xy4z) 4(pqpr)(8pqpr) 5 x 1 x 0.6x0.78.56.6x 3 6 6 8 1 8x3x 9(x1)3(x3)7 9 8 1 3 (3x9)x4 2x4(10x)7 9 5 y3
3、 y1 4 3x10(x6)10 4 5 1 2 (24x)(2x3) 5(7x1)16 8 5 1 3 ()()(1) 25(2)3(1) 7 7 1 1 1 ( )( ) 22(16)1(11) 5 2 7 1 (0.7)(500) (3)342 (1)1103 8 1 1 1 ()()0 22(4)2(3 3 9 3 1 5 1 ( )( ) 14(18)2(14) 8 4 5 1 7 ( )(50) (4)313 (1)2067 3 6 (-11)(-20) 17(-20) -11(-18.5) 1 1 ()() 2-4(-59) (-4)234 3 6 -227(-2)(-9) -4
4、.8(-10)(-2.1)4.6 2 1 1 3 3 1 ()() 9.6()(6.3) 3 8 5 5 5 5 (8n4) y3(54c) 3x4(3n7c) (2xn)7(9n2c) 4 (1610y)c 8(8a3bc8) 3 1 1 (bc)(ef) 2(7ay)7(n7q) 9 6 4a(9a3) 7a(4a2q)(2q9a) 8(6a4)8a 10(6b5)(9b7) 4(ab5a)(7a6b) 11(abc7a)7(9a8abc) 5(xy2z)(xy2z) 5(pqpr)(7pqpr) 5 x 1 x 0.4x0.35.64.6x 3 4 6 4 1 4x2x 7(x5)5(x1)17 9 4 1 2 (2x2)x5 9x6(6x)8 4 5 y3 y3 8 2x6(x7)30 2 6 1 2 (13x)(5x2) 8(9x8)20 2 7