1、初一数学上册计算题专项训练80 5 1 ()()(9) 23(4)2(3) 7 7 8 1 1 ( )( ) 26(22)1(11) 9 6 5 1 (0.3)(600) (2)343 (1)1092 6 1 1 1 ()()0 28(2)2(1 6 4 8 1 1 1 ( )( ) 29(27)2(15) 6 3 7 2 1 ( )(10) (2)412 (1)1952 3 7 (6)(11) 4(2) 8(5) 1 1 ()() 204(45) (5)244 3 4 213(15)(16) 8.5(0.6)(0.3)9.5 2 1 1 2 3 8 ()() 1.4()(7.5) 5 5 3
2、 7 5 5 (8n9) z8(83a) 7m7(6b9t) (8mb)7(9n8a) 10 (68z)t 2(4a4xy6) 9 1 1 (xy)(st) 3(7ax)8(n7p) 6 8 4a(8a4) 5a(3a7p)(8pa) 4(9n10)8n 6(4y10)(9y6) 8(ab4a)(6a8b) 18(abc9a)9(5a2abc) 2(xy9z)(xy9z) 2(pqpr)(7pqpr) 5 x 1 x 0.5x0.33.14.2x 3 8 9 4 1 2x6x 7(x4)9(x1)9 3 9 1 4 (8x2)x4 4x6(17x)1 5 5 y3 y1 6 0.5x4.5(x
3、3)5 3 5 0.1x0.14.20.2x 3(7x6)14 2 1 ()()(5) 8(1)3(5) 7 7 7 1 8 ( )( ) 6(24)9(20) 6 2 9 1 (0.6)(20) (5)452 (1)2470 6 1 1 1 ()()0 23(2)2(1 2 6 7 1 1 8 ( )( ) 24(15)9(19) 3 6 7 9 1 ( )(30) (3)243 (1)1340 8 7 (17)(17) 14(20) 14.5(5) 1 1 ()() 194(199) (2)453 4 7 338(3)(4) 5.9(1.6)(4.3)9 2 1 1 1 3 4 ()()
4、3.8()(5.2) 7 4 2 5 5 5 (2y8) z5(77c) 10x6(6y4z) (8xy)5(7y6c) 1 (108z)z 5(6a8bc5) 4 1 1 (xy)(st) 5(8ax)5(m8q) 3 9 9a(5a7) a(3a2s)(9s5a) 8(8t2)3t 8(2a4)(6a10) 8(ab2a)(9a3b) 4(abc2a)6(3a9abc) 7(xy3z)(xy4z) 9(pqpr)(2pqpr) 7 x 1 x 0.1x0.48.22.4x 9 8 6 4 1 8x9x 2(x5)7(x3)3 9 4 1 3 (6x8)x5 3x9(18x)1 7 5 y3
5、 y2 3 1.5x4(x5)10 3 6 0.4x0.27.92.5x 6(7x6)16 6 6 ()()(3) 26(4)3(1) 7 7 1 1 1 ( )( ) 27(16)10(18) 5 4 5 1 (0.5)(30) (2)353 (1)2939 6 1 1 1 ()()0 5(3)2(5 6 5 4 1 1 1 ( )( ) 29(23)5(14) 4 2 7 1 1 ( )(40) (4)222 (1)2261 6 7 (4)(11) 18(7) 6(13) 1 1 ()() 10(92) (4)234 9 3 189(15)(24) 1.9(0.8)(4.5)1.6 2 1
6、 1 1 2 6 ()() 3.1()(5.4) 3 6 3 5 5 5 (3x8) y6(12b) 9m9(2y7z) (7my)5(6x5b) 1 (204y)z 2(4b2xy2) 7 1 1 (bc)(ef) 4(8ax)5(m9q) 7 5 2a(4a4) 7a(2a8c)(6ca) 8(3b10)3b 1(4x1)(3x9) 8(ab8a)(4a3b) 6(abc9a)3(7a8abc) 7(xy8z)(xy7z) 5(pqpr)(2pqpr) 7 x 1 x 0.6x0.35.82x 3 6 9 2 1 8x2x 5(x3)7(x6)11 3 3 1 4 (9x7)x8 2x2(
7、17x)9 2 5 y1 y1 4 5x1(x3)35 3 6 0.6x0.17.72.6x 4(5x9)1 6 4 ()()(8) 13(2)2(5) 7 7 2 1 4 ( )( ) 7(17)5(19) 3 4 3 1 (0.2)(800) (3)322 (1)1459 4 1 1 1 ()()0 20(4)2(1 7 8 6 1 1 1 ( )( ) 2(26)4(18) 3 2 8 7 1 ( )(100) (5)353 (1)2383 8 2 (16)(5) 4(6) 5.5(20) 1 1 ()() 103(147) (5)324 9 5 148(2)(20) 4.4(5.3)(
8、2.4)9.7 2 1 1 3 3 3 ()() 5.7()(3.2) 5 4 7 5 5 5 (2b3) y7(16b) 14a8(4n8z) (9an)9(8b6b) 6 (64y)z 7(8d5ab3) 5 1 1 (bc)(st) 3(9ax)3(n6p) 9 5 3b(4b6) b(4b3c)(7c9b) 7(7m8)9m 8(5n7)(3n8) 3(ab3a)(5a9b) 15(abc6a)3(9a9abc) 9(xy7z)(xy2z) 4(pqpr)(5pqpr) 5 x 1 x 0.1x0.45.76.9x 3 8 6 2 1 7x7x 3(x2)4(x4)8 3 3 1 1
9、(2x5)x3 2x6(12x)3 6 5 y2 y1 3 3x7(x9)25 3 6 0.8x0.645.4x 5(6x8)11 6 6 ()()(6) 8(3)3(1) 7 7 4 1 1 ( )( ) 9(19)7(14) 3 8 7 1 (0.1)(9) (3)432 (1)1707 3 1 1 1 ()()0 14(3)3(2 8 5 2 1 9 1 ( )( ) 9(19)2(16) 7 8 7 1 3 ( )(90) (2)253 (1)2658 8 2 (2)(11) 7(16) 6.5(9.5) 1 1 ()() 153(134) (4)412 4 9 2320(12)(1)
10、 7.4(3.8)(4.3)8.2 2 1 1 3 1 3 ()() 2.9()(4.6) 5 4 4 5 5 5 (7m3) z7(82a) 15m7(5n7c) (3mn)8(2m2a) 1 (104z)c 7(9b2xy8) 5 1 1 (yz)(pq) 5(7ay)7(m3p) 8 3 6x(7x4) x(8x7d)(2d8x) 3(5b5)3b 5(7b8)(2b2) 3(ab3a)(2a5b) 8(abc8a)6(2a3abc) 3(xy4z)(xy4z) 3(pqpr)(4pqpr) 7 x 1 x 0.4x0.77.64x 6 4 6 8 1 9x4x 7(x6)5(x7)8 7 5 1 3 (8x4)x7 4x2(7x)5 3 5 y3 y3 8 1.5x1(x3)10 3 5 0.1x0.57.81.8x 9(9x4)17
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