初一数学上册计算题大全278.docx

1、初一数学上册计算题大全278 6 2 ()()(10) 3(1)3(3) 7 7 3 1 1 ( )( ） 27(19)3(16) 2 4 5 1 (0.8)(8) (5)332 (1)1430 9 1 1 1 ()()0 16(1)2(4 8 4 5 1 1 1 ( )( ) 28(19)1(11) 2 2 4 1 3 ( )(80) (5)243 (1)2365 5 4 (-3)(-14) 12(-3) 14(-5) 1 1 ()() -9-1(-209) (-5)344 6 2 -14(-21)(-29) 2.9(-9.9)(-3.7)6.3 2 1 1 1 7 4 ()() 7.9()

2、(7.8) 5 6 4 5 5 5 (5y6) x6(86b) 17x6(8b7c) (7xb)2(7y3b) 1 (146x)c 4(9b5mn8) 3 1 1 (yz)(st) 5(7bx)2(n4q) 5 7 9n(2n2) n(3n9p)(8pn) 4(9t6)6t 10(7b2)(6b2) 8(ab9a)(8a5b) 4(abc3a)7(8a5abc) 5(xy5z)(xy5z) 9(pqpr)(3pqpr) 7 x 1 x 0.8x0.87.43.1x 6 2 6 8 1 8x6x 9(x1)5(x7)2 7 8 1 4 (5x2)x8 4x2(17x)3 8 5 y1 y3 4

3、0.5x0.5(x8)25 3 6 1 2 (42x)(5x1) 2(7x2)7 4 9 3 5 ()()(3) 25(2)2(4) 7 7 1 1 6 ( )( ） 28(21)7(17) 2 4 7 1 (0.8)(50) (2)343 (1)2112 9 1 1 1 ()()0 7(1)2(4 6 9 7 1 4 6 ( )( ) 3(27)8(17) 8 3 7 4 1 ( )(60) (4)412 (1)2759 5 2 (-16)(-19) 7(-6) -4.5(-3) 1 1 ()() -141(-66) (-1)322 8 6 -83(-29)(-29) -8.3(-7.4)(

4、-0.7)8.8 2 1 1 2 3 4 ()() 3.5()(6.1) 3 6 5 5 5 5 (9y1) y6(86a) 14m4(8b5t) (5mb)2(4y4a) 1 (1410y)t 3(5b5xy6) 8 1 1 (ab)(pq) 3(9ay)2(m9q) 5 4 3a(8a6) 9a(5a8c)(5c7a) 8(7s3)3s 9(9y6)(5y6) 8(ab4a)(5a9b) 11(abc6a)8(4a6abc) 2(xy2z)(xy9z) 8(pqpr)(8pqpr) 5 x 1 x 0.4x0.92.55.2x 6 6 6 8 1 5x3x 4(x8)5(x5)1 3 7 1 3 (6x5)x6 5x6(7x)6 2 5 y3 y1 4 2x7(x1)5 2 6 1 2 (53x)(5x1) 8(7x4)18 3 3