1、有理数计算题专项练习 79 1 1 () () (10)4(0.5) 3 4 1 () 2 (12)120.25 2 1 9 ( )( )(3) 1(1984) 6 8 1 (8) 6(3.7)0(33.2) 8 (5)(14) 3(8) 9(9) 1 1 () () (10)12(4.25) 8 4 1 () 10 (8)4125 6 1 3 ( )( )(6) -1(2883) 2 2 1 (2) 9.5(2.1)0(94.6) 6 (9)(20) 3(6) 3.5(14) 1 1 () () (1)12(0.5) 8 7 1 () 14 (12)185 5 7 1 ( )( )(2) -
2、1(2645) 6 2 21 (6) 14(8.4)0(10.7) 20 (4)(18) 6(2) 4(10) 1 1 () () (4)6(2.25) 8 7 1 () 16 (4)80.05 5 1 4 ( )( )(5) 1(2408) 4 3 17 (4) 12.5(7.3)0(46.1) 16 (8)(17) 2(13) 9(20) 1 1 () () (10)20(0.25) 6 4 1 () 10 (12)180.125 7 1 4 ( )( )(8) -1(2956) 3 3 15 (18) 12.5(6.2)0(62.9) 16 (1)(14) 4(5) 1(19) 1 1
3、() () (8)20(3) 6 5 1 () 6 (4)140.5 8 7 1 ( )( )(2) 1(1303) 6 6 9 (14) 8.5(7.3)0(86.4) 8 (10)(5) 10(16) 1(20) 1 1 () () (1)18(1.5) 6 9 1 () 14 (8)20125 2 8 8 ( )( )(4) 1(2980) 7 7 11 (16) 18(2.9)0(27.4) 10 (10)(7) 7(12) 8(3) 1 1 () () (3)12(4) 7 7 1 () 6 (8)162.5 3 9 8 ( )( )(10) 0(1638) 8 7 5 (4) 8.
4、5(7.6)0(88.2) 4 (1)(3) 1(7) 8.5(17) 1 1 () () (4)20(2.5) 5 8 1 () 10 (8)40.25 7 8 1 ( )( )(4) -1(2250) 7 7 17 (18) 13.5(5.3)0(42.2) 18 (9)(19) 10(16) 10(17) 1 1 () () (7)8(0.5) 2 6 1 () 6 (20)102.5 4 7 3 ( )( )(3) 1(1275) 6 2 19 (2) 14.5(6.5)0(48.6) 18 (3)(8) 6(8) 7.5(10) 1 1 () () (7)4(3.25) 6 6 1
5、() 8 (12)145 5 3 7 ( )( )(3) -1(1880) 2 6 5 (18) 5(4.4)0(59.2) 4 (2)(16) 5(1) 10(6) 1 1 () () (9)12(2.5) 3 6 1 () 16 (8)140.125 6 1 1 ( )( )(7) -1(2484) 3 7 19 (4) 1.5(8.2)0(98.5) 20 (1)(17) 10(18) 2.5(10) 1 1 () () (1)6(2) 2 7 1 () 12 (20)20250 7 1 9 ( )( )(3) -1(1782) 3 8 13 (6) 11(1.1)0(81.9) 12
6、(6)(3) 6(3) 7(19) 1 1 () () (8)4(1.25) 4 7 1 () 4 (16)1650 8 1 6 ( )( )(3) -1(2096) 5 5 7 (20) 8(2.7)0(19.7) 8 (6)(15) 7(10) 9(15) 1 1 () () (5)4(2.75) 2 7 1 () 20 (20)2125 5 1 1 ( )( )(2) -1(2357) 2 6 15 (4) 17(3.9)0(16.9) 14 (7)(20) 10(12) 8(18) 1 1 () () (8)18(2.75) 7 8 1 () 6 (8)200.05 4 9 1 ( )
7、( )(8) 0(1739) 8 5 11 (18) 6(6.3)0(10.2) 10 (8)(9) 4(12) 4.5(11) 1 1 () () (3)8(0.5) 7 5 1 () 4 (4)121.25 6 1 1 ( )( )(8) 0(2879) 4 8 21 (10) 10(9.9)0(55.2) 20 (7)(2) 6(13) 3(9) 1 1 () () (1)16(4.75) 6 9 1 () 10 (20)10250 7 1 3 ( )( )(2) 1(2800) 3 2 5 (4) 8(5.4)0(16.6) 6 (7)(6) 9(1) 1(14) 1 1 () ()
8、(7)2(3.5) 5 2 1 () 18 (12)80.125 2 1 8 ( )( )(5) -1(2546) 4 7 7 (12) 12.5(3.5)0(56.4) 8 (9)(13) 7(9) 8.5(9) 1 1 () () (8)20(2.5) 4 2 1 () 8 (20)180.25 4 1 1 ( )( )(2) -1(2654) 3 7 1 (4) 8(4.9)0(28.8) 10 (6)(16) 1(7) 2(9) 1 1 () () (6)2(4.5) 6 2 1 () 20 (20)85 5 1 1 ( )( )(4) -1(1989) 7 2 1 (16) 20(5.2)0(95.9) 16 (2)(7) 6(12) 5(3) 1 1 () () (3)12(0.25) 2 5 1 () 8 (20)60.05 8 6 1 ( )( )(10) 0(2618) 5 5 7 (6) 18.5(7.7)0(13.9) 6 (1)(6) 5(8) 6.5(9) 1 1 () () (5)6(3.5) 2 5 1 () 2 (12)201.25 3 8 1 ( )( )(4) -1(2017) 7 5 1 (4) 13.5(2.6)0(48.8) 12
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