1、有理数计算题专项练习 20(8)(12) 4(6) 8(4) 1 1 () () (2)12(5) 2 6 1 () 6 (4)1225 3 1 1 ( )( )(6) 0(2366) 5 7 1 (4) 1(9.3)0(31.6) 16 (1)(14) 2(12) 2.5(4) 1 1 () () (6)16(2.75) 6 7 1 () 8 (12)182.5 7 4 1 ( )( )(7) -1(1063) 3 8 7 (8) 14.5(8)0(55.9) 6 (1)(8) 4(15) 5(16) 1 1 () () (1)6(3.5) 4 9 1 () 18 (20)65 4 1 7
2、( )( )(6) -1(1212) 4 6 19 (10) 4.5(0.4)0(87.8) 18 (2)(10) 2(19) 4.5(2) 1 1 () () (9)6(1.5) 6 4 1 () 18 (12)6125 3 6 5 ( )( )(5) 0(1033) 5 4 7 (18) 10(5)0(38.3) 8 (10)(8) 5(4) 7(12) 1 1 () () (9)16(3) 8 9 1 () 16 (20)6250 4 1 1 ( )( )(4) 1(2840) 8 4 13 (8) 15.5(4.5)0(20.9) 14 (9)(5) 4(3) 7.5(8) 1 1 (
3、) () (6)6(1.25) 3 4 1 () 12 (20)180.25 5 4 8 ( )( )(5) -1(1714) 3 7 1 (18) 18(0.6)0(90) 20 (6)(3) 1(7) 1(2) 1 1 () () (7)4(2.5) 7 3 1 () 16 (20)12250 5 1 1 ( )( )(3) 0(2170) 5 6 1 (4) 17(5.3)0(25.1) 2 (9)(19) 2(1) 1.5(20) 1 1 () () (8)2(0.25) 5 5 1 () 2 (4)6125 7 1 1 ( )( )(3) 0(1725) 8 6 5 (20) 4(3
4、.1)0(57.2) 4 (8)(1) 3(15) 5(12) 1 1 () () (5)2(5) 6 8 1 () 10 (12)450 3 4 1 ( )( )(2) 0(1561) 3 6 21 (10) 5.5(6.9)0(96) 20 (2)(20) 10(10) 7(4) 1 1 () () (7)14(2.5) 8 4 1 () 18 (8)1025 8 9 1 ( )( )(5) -1(1693) 8 4 11 (12) 13(2.7)0(56.5) 10 (3)(19) 9(4) 7(20) 1 1 () () (3)18(2.5) 6 7 1 () 10 (8)2125 7
5、 3 1 ( )( )(7) 0(1364) 2 6 15 (8) 19.5(5.9)0(35.3) 16 (1)(7) 10(19) 6(11) 1 1 () () (3)18(1.5) 7 6 1 () 12 (16)41.25 6 1 1 ( )( )(7) 0(1202) 8 6 21 (12) 10.5(0.7)0(43.5) 20 (5)(16) 4(11) 6(10) 1 1 () () (10)10(2) 5 8 1 () 16 (16)20250 2 4 1 ( )( )(8) -1(2261) 3 4 17 (6) 4.5(7.5)0(29.2) 16 (2)(17) 8(
6、1) 9(16) 1 1 () () (2)8(2) 6 6 1 () 18 (12)412.5 2 8 1 ( )( )(3) -1(2663) 7 7 1 (12) 2.5(9.3)0(58.3) 14 (2)(17) 6(14) 10(11) 1 1 () () (10)18(2.25) 8 7 1 () 10 (16)200.125 8 3 1 ( )( )(9) -1(1981) 2 3 7 (14) 11.5(6.7)0(33.6) 8 (2)(17) 8(11) 5.5(16) 1 1 () () (7)12(3) 4 3 1 () 20 (8)20.125 5 9 1 ( )(
7、 )(9) 1(2103) 8 4 17 (14) 15.5(4.6)0(36.5) 16 (4)(14) 8(13) 1(5) 1 1 () () (3)4(1.75) 6 7 1 () 20 (4)25 7 1 1 ( )( )(3) 0(2733) 7 7 17 (6) 5.5(2.6)0(86.8) 16 (5)(20) 4(17) 6(4) 1 1 () () (4)6(0.5) 2 3 1 () 6 (4)14250 4 3 1 ( )( )(9) -1(2772) 2 7 15 (10) 4(8.6)0(26.2) 14 (7)(9) 4(9) 7(1) 1 1 () () (9
8、)2(1.5) 8 3 1 () 10 (20)120.05 8 1 9 ( )( )(9) 0(2389) 3 8 17 (4) 5(2.1)0(26.3) 18 (9)(3) 1(14) 7(18) 1 1 () () (5)6(2.25) 6 2 1 () 14 (12)80.5 4 8 7 ( )( )(4) 0(1045) 7 6 1 (16) 14.5(2.4)0(92.1) 14 (7)(11) 1(6) 1.5(10) 1 1 () () (1)6(2) 3 5 1 () 20 (20)100.25 2 3 6 ( )( )(4) 0(1366) 2 5 1 (20) 6(6)0(34.6) 14 (3)(3) 7(4) 2(18) 1 1 () () (7)2(2.75) 8 4 1 () 18 (8)185 7 1 1 ( )( )(8) -1(1131) 7 7 1 (2) 18(8.9)0(66.3) 12 (10)(6) 9(20) 3.5(16) 1 1 () () (8)16(3.25) 7 3 1 () 16 (20)18250 7 6 1 ( )( )(4) -1(1405) 5 7