初一数学上册计算题天天练 84.docx

1、初一数学上册计算题天天练 84 1 1 ()() 20(19) (1)223 2 2 2913(6)(10) 9.6(2.8)(3.5)1 2 1 1 3 2 1 ()() 8.5()(6.2) 3 6 8 7 5 5 (9m5) z2(58c) 10m7(2n7c) (2mn)7(8m6c) 8 (144z)c 8(5c2ab3) 7 1 1 (yz)(pq) 5(8ay)4(n2p) 6 4 4n(8n4) n(8n2c)(7c5n) 2(8b2)3b 6(9y3)(4y6) 4(ab8a)(6a9b) 15(abc4a)2(3a8abc) 6(xy7z)(xy9z) 9(pqpr)(7p

2、qpr) 5 x 1 x 0.2x0.16.80.6x 9 4 9 8 1 3x3x 9(x1)8(x1)18 9 9 1 2 (2x4)x3 5x3(15x)4 9 5 y1 y2 4 3.5x3(x5)20 3 5 1 2 (23x)(4x3) 3(7x2)12 2 7 4 2 ()()(1) 8(4)2(5) 7 7 5 1 4 ( )( ） 8(19)1(14) 6 4 3 1 (0.8)(4) (3)443 (1)2190 4 1 1 1 ()()0 7(2)2(5) 9 4 9 1 6 5 ( )( ) 23(19)5(13) 4 7 4 3 1 ( )(40) (3)422 (1

3、)2693 4 6 (16)(20) 5(12) 6.5(12) 1 1 ()() 161(57) (4)433 7 8 318(29)(7) 1.8(6.6)(0.4)6.8 2 1 1 2 6 9 ()() 8.8()(1.9) 3 9 6 5 5 5 (9a2) x5(58b) 17a9(9n6z) (6an)4(3a6b) 6 (188x)z 2(9d6ab5) 5 1 1 (yz)(st) 3(9ax)8(m7q) 6 4 8m(3m3) m(3m3d)(9d7m) 2(5t1)3t 8(4m2)(3m3) 6(ab7a)(5a5b) 16(abc7a)6(8a4abc) 5(xy9

4、z)(xy8z) 9(pqpr)(8pqpr) 5 x 1 x 0.2x0.91.88.9x 6 2 9 8 1 2x1x 3(x6)9(x8)6 9 2 1 2 (5x9)x6 3x5(1x)4 7 5 y2 y3 3 4x6.5(x2)10 3 6 1 2 (14x)(5x2) 8(3x7)16 8 3 4 6 ()()(5) 21(2)3(5) 7 7 1 1 8 ( )( ） 30(11)1(20) 5 8 9 1 (0.2)(300) (2)313 (1)2215 3 1 1 1 ()()0 14(2)2(4) 8 9 5 1 1 1 ( )( ) 26(30)9(12) 7 3 2

5、 3 6 ( )(60) (5)443 (1)2850 2 5 (13)(4) 1(11) 1(21) 1 1 ()() 105(169) (0)212 3 8 3815(21)(6) 7.4(9.1)(0.8)0.5 2 1 1 1 8 9 ()() 6.8()(6.5) 9 4 4 7 5 5 (2n7) x3(98c) 4a7(2b9t) (3ab)5(2n7c) 1 (82x)t 9(8d4mn2) 7 1 1 (ab)(pq) 3(7ax)4(m3q) 8 5 8a(3a9) 3a(4a7s)(3sa) 2(5n6)6n 7(4n9)(6n8) 9(ab4a)(2a5b) 14(ab

6、c9a)9(7a6abc) 7(xy5z)(xy4z) 4(pqpr)(9pqpr) 7 x 1 x 0.1x0.17.86.4x 9 6 6 8 1 7x2x 9(x4)7(x7)2 3 7 1 4 (7x3)x2 9x5(3x)4 7 5 y1 y1 3 1.5x4(x9)40 2 5 1 2 (53x)(4x5) 5(7x6)5 2 3 1 2 ()()(8) 10(1)3(1) 7 7 3 1 1 ( )( ） 22(20)10(18) 2 2 5 1 (0.3)(80) (4)352 (1)1079 2 1 1 1 ()()0 16(3)3(4) 8 2 7 1 5 2 ( )( )

7、 16(27)2(18) 7 4 3 6 3 ( )(70) (2)422 (1)1921 7 2 (17)(12) 9(3) 12(1) 1 1 ()() 145(114) (4)322 8 2 3012(14)(30) 2.4(9.1)(4.4)0.9 2 1 1 3 8 7 ()() 7.1()(9.3) 9 8 2 7 5 5 (5a2) z2(53c) 14a9(6n2c) (8an)2(9a4c) 3 (64z)c 9(4a8mn7) 4 1 1 (bc)(ef) 4(8ax)4(n4p) 3 3 4y(4y9) 5y(2y5p)(3py) 9(3b1)5b 3(8n3)(8n7)

8、 5(ab6a)(2a4b) 14(abc3a)8(8a3abc) 9(xy2z)(xy6z) 8(pqpr)(9pqpr) 5 x 1 x 0.1x0.434.6x 9 4 6 8 1 6x6x 9(x8)6(x9)4 5 4 1 2 (6x4)x1 8x5(17x)1 2 5 y1 y2 7 5x9.5(x2)20 3 5 1 2 (32x)(5x5) 4(9x7)19 2 3 2 1 ()()(10) 8(2)3(2) 7 7 8 1 6 ( )( ） 7(11)5(14) 9 2 5 1 (0.8)(10) (3)342 (1)2197 5 1 1 1 ()()0 22(4)3(4)

9、3 4 7 1 1 1 ( )( ) 2(19)4(20) 3 6 5 1 5 ( )(30) (1)353 (1)2147 7 4 (16)(17) 1(1) 7.5(11) 1 1 ()() 125(108) (3)233 9 9 219(8)(7) 6.3(4.4)(0.6)6.1 2 1 1 4 7 3 ()() 8.7()(5.2) 7 2 7 7 5 5 (4m7) y7(75a) 2x8(5b4t) (9xb)2(9m7a) 1 (44y)t 3(2b5xy4) 7 1 1 (xy)(st) 5(6ax)9(m4q) 8 3 9a(4a1) a(8a8q)(6qa) 2(2b1)

10、4b 2(3b8)(2b6) 8(ab2a)(8a9b) 18(abc4a)8(5a8abc) 2(xy5z)(xy2z) 9(pqpr)(6pqpr) 5 x 1 x 0.4x0.33.21.6x 3 8 3 8 1 4x3x 6(x5)8(x9)10 3 9 1 3 (9x8)x6 8x7(5x)5 2 5 y2 y1 4 3.5x2.5(x6)20 3 6 1 2 (54x)(4x2) 9(5x5)19 8 3 3 6 ()()(2) 17(1)2(3) 7 7 1 1 8 ( )( ） 14(10)5(10) 5 4 9 1 (0.3)(9) (4)353 (1)1546 8 1 1

11、1 ()()0 2(2)2(4) 7 2 9 1 7 3 ( )( ) 27(22)9(16) 5 6 4 1 4 ( )(80) (2)233 (1)1182 8 3 (14)(15) 20(11) 9.5(11.5) 1 1 ()() 174(12) (4)222 4 8 119(21)(10) 9.9(1.6)(4.5)0.2 2 1 1 1 3 7 ()() 3.3()(7.6) 9 3 2 5 5 5 (6b7) y2(38a) 15a2(3y3t) (9ay)6(9b4a) 1 (28y)t 4(8b8xy5) 3 1 1 (xy)(st) 2(8bx)2(m2p) 5 6 8n(

12、6n4) 2n(7n2p)(2pn) 9(4n1)4n 6(9x2)(2x7) 4(ab2a)(9a6b) 6(abc5a)5(5a7abc) 3(xy9z)(xy2z) 6(pqpr)(2pqpr) 7 x 1 x 0.3x0.74.17.9x 3 2 6 2 1 2x4x 9(x3)8(x2)15 3 3 1 4 (5x8)x6 6x3(13x)6 3 5 y1 y1 3 2.5x3.5(x3)15 2 6 1 2 (13x)(3x2) 2(3x9)11 5 5 4 3 ()()(3) 3(2)2(3) 7 7 1 1 10 ( )( ） 8(23)7(13) 2 2 9 1 (0.5)(

13、10) (2)223 (1)1470 5 1 1 1 ()()0 30(3)2(5) 8 3 2 1 5 4 ( )( ) 12(12)1(15) 3 6 3 1 5 ( )(80) (5)343 (1)1513 4 4 (16)(20) 19(18) 7(7.5) 1 1 ()() 120(145) (5)353 9 8 1915(14)(21) 3.8(1.6)(1.4)6.6 2 1 1 4 4 6 ()() 4.8()(6.2) 9 2 6 5 5 5 (7m9) z2(65a) 12x9(2y7c) (9xy)7(6m9a) 1 (142z)c 4(7d3xy8) 9 1 1 (bc)(st) 3(9bx)9(m2q) 3 4 9b(9b1) 3b(5b6p)(5pb) 4(3t9)3t 10(2b9)(3b4) 7(ab7a)(8a7b) 11(abc5a)7(8a2abc) 5(xy7z)(xy9z) 7(pqpr)(4pqpr) 5 x 1 x 0.1x0.14.35.2x 9 4 9 4 1 5x5x 6(x8)2(x3)2 3 7 1 1 (5x8)x5 2x6(2x)7 6 5 y3 y2 5 2x8.5(x5)45 3 6 1 2 (52x)(3x3) 2(9x7)16 4 5