1、初一数学上册计算题专项训练50 3 3 ()()(3) 18(4)2(1) 7 7 2 1 8 ( )( ) 17(20)10(18) 3 4 9 1 (0.1)(50) (2)212 (1)2185 2 1 1 1 ()()0 8(3)3(2 9 2 7 1 1 1 ( )( ) 28(19)10(19) 6 8 6 6 4 ( )(20) (5)243 (1)2856 7 3 (8)(9) 17(11) 3(9) 1 1 ()() 194(142) (0)223 5 3 342(12)(11) 7.7(4.8)(1.5)7.7 2 1 1 1 3 8 ()() 4.5()(3.5) 3 5
2、 8 7 5 5 (8n7) y9(74a) 19x3(6y4c) (2xy)4(7n6a) 1 (1810y)c 5(4c9ab9) 2 1 1 (bc)(ef) 3(6by)8(m6p) 2 2 5b(5b1) 2b(7b8p)(6p2b) 9(6s8)6s 6(3y8)(8y1) 8(ab4a)(9a4b) 7(abc8a)9(5a9abc) 3(xy7z)(xy6z) 4(pqpr)(9pqpr) 5 x 1 x 0.7x0.35.20.6x 9 4 9 4 1 8x9x 7(x6)2(x1)8 7 2 1 3 (8x4)x7 6x9(11x)3 5 5 y1 y3 9 1x7.5(x
3、1)50 4 6 0.3x0.53.40.3x 2(5x4)12 1 5 ()()(3) 17(4)2(1) 7 7 1 1 10 ( )( ) 23(28)3(12) 4 8 9 1 (0.1)(60) (4)233 (1)1118 2 1 1 1 ()()0 14(3)2(1 5 7 3 1 1 5 ( )( ) 12(28)2(16) 6 6 4 1 1 ( )(40) (3)433 (1)2623 8 5 (17)(11) 17(3) 13(19.5) 1 1 ()() 204(1310) (0)452 4 9 113(22)(5) 2.4(4.2)(1.7)9.4 2 1 1 2 2
4、 9 ()() 7.4()(9.6) 3 9 4 7 5 5 (2x8) x5(65a) 17m7(5b3z) (5mb)7(9x2a) 6 (1410x)z 8(5a8mn5) 5 1 1 (xy)(mn) 3(9ay)3(m8q) 3 9 5x(7x7) x(9x9s)(8s4x) 2(6n5)7n 7(3b10)(6b7) 5(ab9a)(6a7b) 19(abc2a)7(3a3abc) 7(xy8z)(xy8z) 9(pqpr)(7pqpr) 7 x 1 x 0.4x0.12.70.2x 6 2 3 2 1 6x5x 2(x2)3(x8)2 9 5 1 1 (4x9)x8 7x8(16
5、x)4 5 5 y1 y2 4 4x6.5(x2)10 2 6 0.4x0.40.82.4x 6(8x6)7 3 3 ()()(10) 6(2)3(4) 7 7 8 1 6 ( )( ) 3(15)7(11) 7 6 7 1 (0.2)(600) (2)232 (1)2490 8 1 1 1 ()()0 15(1)2(3 3 8 5 1 1 5 ( )( ) 28(28)2(17) 3 5 6 5 1 ( )(60) (2)413 (1)2783 4 5 (9)(2) 2(7) 5.5(17.5) 1 1 ()() 161(165) (5)214 3 4 513(2)(12) 5.2(4.4)
6、(2.3)9.3 2 1 1 2 6 2 ()() 1.4()(9.7) 3 9 7 7 5 5 (3n4) z7(29a) 16m7(3b9t) (6mb)4(9n3a) 1 (62z)t 2(4d6bc3) 7 1 1 (yz)(mn) 2(8ax)5(n9p) 8 8 3b(5b3) 2b(9b8p)(2p2b) 4(6n9)9n 1(8n2)(6n10) 4(ab3a)(5a9b) 14(abc7a)6(9a8abc) 5(xy5z)(xy5z) 9(pqpr)(4pqpr) 5 x 1 x 0.7x0.42.81.9x 6 8 6 8 1 5x8x 6(x7)3(x1)7 7 3 1
7、 1 (2x7)x1 5x2(14x)6 4 5 y1 y3 9 1.5x5.5(x3)5 3 5 0.6x0.92.99.5x 2(6x9)2 6 4 ()()(2) 18(2)2(1) 7 7 7 1 1 ( )( ) 30(14)5(12) 6 4 7 1 (0.3)(60) (4)233 (1)1546 7 1 1 1 ()()0 24(4)2(5 5 3 4 1 1 3 ( )( ) 18(24)7(13) 8 7 4 1 8 ( )(60) (5)312 (1)2116 3 7 (4)(2) 5(8) 14(14) 1 1 ()() 100(189) (4)333 6 6 158(
8、17)(20) 6.5(5.9)(1.8)9.2 2 1 1 1 8 7 ()() 4.5()(9.3) 3 8 9 5 5 5 (6a7) z5(57b) 5m4(5y2t) (3my)8(3a3b) 3 (1410z)t 3(9a7mn8) 2 1 1 (xy)(mn) 3(7ax)9(m8p) 7 3 4m(2m6) m(6m2q)(4q8m) 2(7b8)8b 2(2x7)(2x1) 5(ab2a)(4a2b) 14(abc6a)2(5a2abc) 4(xy6z)(xy5z) 2(pqpr)(8pqpr) 5 x 1 x 0.6x0.39.93.4x 3 6 9 4 1 4x3x 6(
9、x6)4(x2)6 3 9 1 4 (2x3)x1 7x5(8x)7 3 5 y2 y2 1 1.5x6(x6)15 3 5 0.6x0.96.99.7x 2(3x1)15 1 4 ()()(8) 27(2)3(4) 7 7 1 1 8 ( )( ) 5(26)1(18) 8 8 7 1 (0.1)(30) (4)323 (1)2827 2 1 1 1 ()()0 15(4)2(3 6 8 2 1 1 1 ( )( ) 5(11)3(17) 8 2 5 9 6 ( )(80) (2)433 (1)1553 8 7 (11)(15) 12(9) 8.5(4.5) 1 1 ()() 113(133
10、) (1)214 4 8 205(3)(29) 1.9(5.9)(2.9)1.7 2 1 1 4 4 8 ()() 4.5()(8.7) 3 9 8 5 5 5 (9x7) x5(75c) 13x6(2n6z) (4xn)5(8x6c) 1 (88x)z 6(6d8mn6) 2 1 1 (ab)(mn) 4(8ay)2(m6p) 7 4 2x(7x8) 4x(4x6z)(3z5x) 5(9t7)8t 8(7m2)(6m9) 6(ab7a)(4a3b) 18(abc5a)9(3a5abc) 9(xy5z)(xy9z) 8(pqpr)(3pqpr) 7 x 1 x 0.8x0.44.16.7x 6 2 6 2 1 3x5x 7(x5)8(x4)2 3 7 1 3 (4x8)x9 6x2(2x)7 5 5 y1 y2 7 2x6.5(x3)40 2 5 0.1x0.65.38.1x 6(6x3)13
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