1、七年级数学上册计算题天天练 38 2 4 ()()(9) 16(2)3(1) 7 7 1 1 10 ( )( ) 18(25)10(17) 6 8 9 1 (0.4)(100) (1)232 (1)1575 9 1 1 1 ()()0 29(2)3(5 7 3 3 1 3 6 ( )( ) 12(16)8(17) 7 2 5 9 1 ( )(50) (3)412 (1)1998 8 7 (-17)(-5) 18(-10) -6.5(-20.5) 1 1 ()() -95(-177) (-2)442 3 3 3410(-28)(-22) -9.3(-6.3)(-1.5)7.8 2 1 1 3 8
2、 2 ()() 4.9()(3.7) 5 7 4 7 5 5 (5b8) z2(16a) 7m9(6b2t) (2mb)5(9b4a) 1 (148z)t 4(6c2xy9) 5 1 1 (yz)(st) 4(7ax)8(m5q) 8 4 8b(7b8) 4b(6b2p)(8p8b) 8(4a8)6a 10(6x3)(7x9) 8(ab9a)(5a3b) 2(abc3a)6(2a6abc) 4(xy5z)(xy3z) 2(pqpr)(2pqpr) 7 x 1 x 0.4x0.44.91.4x 9 6 9 8 1 3x8x 8(x3)4(x4)20 9 3 1 3 (3x1)x4 5x6(17x
3、)9 3 5 y1 y2 8 3.5x6(x7)5 3 5 1 2 (14x)(3x4) 4(5x1)1 8 9 5 5 ()()(6) 19(2)3(1) 7 7 10 1 8 ( )( ) 16(12)3(14) 9 6 7 1 (0.2)(100) (5)433 (1)2943 9 1 1 1 ()()0 11(1)3(3 4 8 2 1 1 4 ( )( ) 24(27)2(19) 2 5 5 1 1 ( )(30) (1)343 (1)1380 2 5 (-3)(-9) 8(-17) 0.5(-20.5) 1 1 ()() -193(-64) (0)433 4 8 2811(-30)
4、(-1) 9.9(-4.8)(-4.6)1.9 2 1 1 3 1 8 ()() 9.9()(4.5) 9 8 2 5 5 5 (2b7) x6(56a) 13m8(6y7t) (3my)5(3b8a) 5 (28x)t 8(3b6mn6) 4 1 1 (bc)(st) 5(8ax)9(m4p) 8 6 8n(2n9) 4n(8n5p)(9p7n) 2(9m2)9m 9(2b6)(4b2) 7(ab7a)(2a6b) 14(abc7a)8(8a6abc) 9(xy4z)(xy8z) 7(pqpr)(9pqpr) 5 x 1 x 0.9x0.75.84.4x 3 4 6 2 1 2x3x 2(x8)5(x5)11 3 7 1 1 (3x2)x7 2x5(20x)8 6 5 y1 y1 5 3x1.5(x9)15 2 6 1 2 (12x)(2x4) 2(7x8)5 7 9