初一数学上册计算题大全212.docx

1、初一数学上册计算题大全212 6 5 ()()(5) 19(4)2(4) 7 7 1 1 1 ( )( ） 10(20)2(15) 9 6 3 1 (0.7)(80) (2)252 (1)1690 2 1 1 1 ()()0 4(4)3(2 6 5 7 1 5 4 ( )( ) 9(21)7(20) 2 4 5 4 1 ( )(100) (3)453 (1)2021 5 3 (-12)(-8) 9(-2) -6(-22) 1 1 ()() 25(-35) (-1)443 8 2 248(-21)(-4) -1.3(-6.2)(-0.4)6.3 2 1 1 4 1 9 ()() 8.9()(7.

2、5) 7 9 5 7 5 5 (9n9) x6(27b) 12m5(7y3t) (2my)7(4n2b) 1 (86x)t 8(2d6xy5) 7 1 1 (xy)(mn) 5(9ay)4(n5p) 3 5 6n(4n1) 6n(9n6p)(9p6n) 4(8b9)5b 10(2y2)(4y6) 3(ab8a)(9a2b) 2(abc6a)7(2a8abc) 9(xy9z)(xy7z) 5(pqpr)(8pqpr) 7 x 1 x 0.3x0.38.32.2x 9 2 9 2 1 9x4x 3(x1)2(x8)2 5 7 1 1 (9x2)x7 7x2(3x)6 6 5 y3 y2 9 4x6

3、(x8)5 2 5 1 2 (34x)(4x2) 7(4x7)13 2 5 4 2 ()()(6) 12(2)3(3) 7 7 9 1 4 ( )( ） 24(26)9(14) 8 2 5 1 (0.5)(3) (5)342 (1)1425 7 1 1 1 ()()0 28(2)2(5 8 6 9 1 6 1 ( )( ) 27(23)9(10) 5 7 3 1 1 ( )(70) (5)433 (1)1104 8 2 (-8)(-4) 20(-16) -5(-18) 1 1 ()() 143(-125) (-1)422 7 6 -208(-28)(-7) 8.7(-9.7)(-3.7)3.1

4、 2 1 1 3 1 1 ()() 4.5()(4.2) 7 4 3 7 5 5 (3b5) z3(17b) 4x5(7y6t) (8xy)5(9b7b) 8 (42z)t 4(7b4ab3) 7 1 1 (yz)(ef) 5(7ay)8(m6q) 6 3 9y(8y6) 2y(9y5s)(4sy) 8(5t3)6t 10(6b2)(4b4) 8(ab9a)(2a5b) 15(abc3a)6(4a9abc) 9(xy4z)(xy3z) 2(pqpr)(5pqpr) 7 x 1 x 0.3x0.75.63.8x 9 2 9 2 1 2x4x 6(x9)8(x9)7 5 2 1 4 (8x3)x4 4x7(5x)2 7 5 y2 y1 3 1x9.5(x5)30 3 5 1 2 (13x)(5x2) 2(4x5)11 5 9