1、初一数学上册计算题专项训练122 2 2 ()()(4) 29(4)3(2) 7 7 1 1 8 ( )( ) 2(12)3(20) 6 8 7 1 (0.7)(6) (3)342 (1)1445 8 1 1 1 ()()0 20(3)2(5 9 8 5 1 6 1 ( )( ) 14(24)7(17) 2 5 6 4 1 ( )(10) (1)342 (1)1244 5 4 (19)(3) 18(13) 2.5(9.5) 1 1 ()() 11(39) (4)313 3 5 3816(17)(22) 7.5(7.2)(2.9)8.5 2 1 1 3 7 7 ()() 6.5()(5.7) 5
2、 9 6 5 5 5 (6y5) x7(42a) 18m3(9b5c) (2mb)3(3y8a) 1 (28x)c 2(6a3mn6) 2 1 1 (yz)(pq) 3(7ay)7(m2p) 5 8 2b(3b7) 3b(8b7z)(4zb) 6(6n9)2n 7(8n6)(2n7) 6(ab9a)(2a2b) 7(abc5a)4(3a2abc) 2(xy9z)(xy8z) 3(pqpr)(7pqpr) 7 x 1 x 0.9x0.135x 3 2 3 4 1 2x6x 3(x6)8(x3)12 7 5 1 2 (6x5)x8 6x8(19x)2 6 5 y3 y2 5 3.5x6.5(x1)
3、30 2 5 0.3x0.15.64.1x 6(7x6)15 2 6 ()()(6) 4(3)2(4) 7 7 1 1 1 ( )( ) 24(12)5(19) 3 2 3 1 (0.4)(800) (3)312 (1)2246 5 1 1 1 ()()0 23(4)3(5 9 2 5 1 5 1 ( )( ) 20(10)7(14) 2 4 5 1 5 ( )(10) (5)212 (1)1164 7 6 (8)(4) 4(11) 9.5(21.5) 1 1 ()() 44(156) (1)252 3 8 3711(1)(11) 3.5(8.4)(2.4)3.4 2 1 1 1 7 3 ()
4、() 6.6()(6.5) 5 6 2 5 5 5 (5x3) z6(56c) 14x5(5b7c) (4xb)6(2x3c) 1 (102z)c 4(6b8ab8) 5 1 1 (yz)(ef) 5(7bx)2(m4q) 6 6 7b(4b8) 8b(4b3q)(3q6b) 8(4n6)7n 3(9n8)(7n8) 8(ab8a)(8a9b) 8(abc5a)6(8a3abc) 5(xy6z)(xy6z) 8(pqpr)(9pqpr) 5 x 1 x 0.6x0.775.1x 6 2 6 2 1 5x7x 3(x3)2(x9)8 5 5 1 3 (8x4)x1 5x6(2x)3 9 5 y3
5、 y1 4 5x9.5(x6)5 3 5 0.5x0.66.18.5x 6(4x4)7 5 5 ()()(8) 29(2)2(3) 7 7 7 1 10 ( )( ) 14(22)2(13) 6 2 9 1 (0.9)(50) (1)452 (1)2059 3 1 1 1 ()()0 29(4)3(2 5 7 7 1 5 4 ( )( ) 5(11)8(11) 4 4 5 1 1 ( )(10) (4)423 (1)1889 6 4 (16)(18) 9(10) 12.5(5) 1 1 ()() 52(189) (5)324 3 8 2711(30)(21) 4.3(3.1)(4.8)3.7
6、2 1 1 1 1 7 ()() 6.3()(1.5) 3 8 8 7 5 5 (9m4) y5(44b) 19m6(4n6z) (3mn)7(4m9b) 1 (142y)z 7(2c7bc6) 2 1 1 (xy)(st) 5(8ax)2(n5p) 9 8 6b(7b7) 8b(8b4d)(6db) 3(4n10)6n 5(4a1)(5a2) 9(ab6a)(4a7b) 14(abc2a)4(6a6abc) 5(xy4z)(xy8z) 9(pqpr)(8pqpr) 5 x 1 x 0.1x0.65.37.1x 6 2 6 8 1 8x3x 5(x1)4(x2)4 5 8 1 1 (9x7)x
7、8 8x7(4x)6 4 5 y2 y2 3 4x9.5(x1)10 3 5 0.8x0.33.95.5x 2(2x3)16 5 3 ()()(6) 10(3)2(2) 7 7 3 1 1 ( )( ) 10(30)7(19) 2 4 7 1 (0.2)(8) (5)432 (1)2186 2 1 1 1 ()()0 3(3)2(5 6 8 6 1 5 9 ( )( ) 16(12)6(12) 8 4 8 1 1 ( )(80) (4)413 (1)1655 7 7 (11)(6) 6(6) 12.5(18.5) 1 1 ()() 103(61) (3)324 2 8 2620(20)(29)
8、 5.8(10)(3.6)2.5 2 1 1 2 6 7 ()() 6.7()(7.8) 3 2 3 5 5 5 (7b4) x9(86c) 3m7(9b3c) (5mb)4(8b5c) 3 (88x)c 6(3a3xy5) 4 1 1 (yz)(pq) 2(8ax)7(n7q) 6 8 9a(3a5) 6a(9a9d)(5d4a) 2(8s2)2s 6(7m5)(5m9) 4(ab8a)(9a9b) 7(abc9a)3(5a5abc) 8(xy4z)(xy6z) 6(pqpr)(9pqpr) 7 x 1 x 0.2x0.38.99.7x 3 6 6 2 1 4x4x 9(x5)7(x2)13
9、 9 2 1 4 (3x2)x3 4x7(13x)1 2 5 y3 y3 9 0.5x2(x4)30 3 6 0.6x0.177.7x 5(8x3)20 2 6 ()()(3) 19(4)2(4) 7 7 1 1 1 ( )( ) 19(14)5(14) 5 2 3 1 (0.6)(5) (5)333 (1)1502 5 1 1 1 ()()0 15(3)3(3 8 4 9 1 5 7 ( )( ) 26(23)10(15) 8 6 8 6 1 ( )(50) (2)412 (1)1607 7 3 (10)(7) 15(11) 8.5(16) 1 1 ()() 53(18) (5)433 8
10、2 88(28)(9) 2.4(7)(1.1)6.5 2 1 1 3 2 2 ()() 7.1()(7.5) 7 8 9 7 5 5 (7y1) z9(33a) 8x8(6y6t) (3xy)4(5y9a) 1 (24z)t 4(6d5bc9) 2 1 1 (yz)(ef) 5(7ay)3(n7q) 7 6 2b(6b6) b(3b3d)(8db) 9(8s1)6s 7(3x7)(2x4) 5(ab9a)(9a7b) 9(abc3a)9(9a2abc) 2(xy5z)(xy5z) 6(pqpr)(8pqpr) 7 x 1 x 0.3x0.336.3x 9 2 6 4 1 8x8x 7(x5)6(x5)15 5 4 1 3 (2x7)x2 4x8(7x)2 8 5 y1 y1 9 0.5x3.5(x9)15 4 6 0.4x0.11.31.9x 8(9x1)13
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