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解比例方程专项练习题.doc

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1、 解比例专项练习183题(有答案)(1)x:8=:,(2):=:X, (3)16:x=0.75:, (4)(x0.4):8=, (5)1.6:x=0.125:0.5 (6):=:x, (7)x:1.2=3:4, (8)12:3=:x, (9)=5:3, (10)0.8:4=x:8, (11)16:x=2.4:3, (12):x=:, (13)=, (14)x:7.5=0.16:1, (15)(4.5x):0.6=(10+x):2, (16), (17), (18)=, (19)X:18.5=5:4,(20)8:X=:,(21)0.5:0.25=0.2:X, (22)x:12=:2.8,(23)

2、:=x:, (24)=, (25)9:54.5:x,(26):x:,(27), (28):x:8, (29)x:51:17, (30):,(31)6:x=4:7, (32)30:x=54:36, (33)2.5:15=:x, (34)=, (35):=:x,(36)x:17=, (37)=, (38)1.3:x=5.2:20, (39)x:36=6:18, (40),(41):=x:9(42):x=:(43)x:42=:10, (44)=, (45):x=:6,(46)=, (47):x=:,(48)20:x=:(49)x:0.4=0.6:0.3, (50)=, (51)8:9=4:x,(52

3、)3:4=x:1.2, (53)=, (54)=, (55)x:=:,(56), (57)=x: (58) 6:x=4.5:1, (59) 3:x=:1, (60)0.72:x=9.6:4.8,(61)12:=x:0.5,(62):=,(63)x:=28:,(64)x:6.4=12:8, (65):x=:3,(66)=,(67), (68),(69)=8:x,(70), (71)4:1=x:, (72):3=x:0.7, (73)x:1.8=5:14, (74)=,(74)75:x=2.5:12, (75)0.75:=x:,(76)25:7=x:35 (77)514:35=57:x (78)2

4、3:x=12:14 (79)x:15=13:56 (80)34:x=54:2 (81)x:0.75=81.25 (82)x:=:4, (83)=, (84):=X:9,(85)0.75:=X:,(86)=, (87)3.6:x=1.8:3, (88),(89),(90)8:13=20:x, (91)x:2.5=4:0.5, (92), (93), (94)x:36=3:54, (95)0.6:0.8=x:20, (96):x=:12,(97)=, (98)0.7:18=21:x(98)=(99)1.5:2.5=12:x(100):=:x(101) =(102) =(103):=:x,(104)

5、(6+x):4=9:5(105)=,(106)=,(107)4:16=9:x, (108):=x:,(109)=, (110)0.5:x=: (111)= (112)=: (113):=:x (115)X:=1.25:3, (116), (117)8:x=1.8:3.6, (118):=6:x,(119)6:=x:,(120), (121)2:5=X:6 (122):=X:(123)= (124):=:X(125):X=3:12 (126)0.4:0.8= (127):=x:,(128):x=3:12, (129)=, (130)2.7:x=54:18, (131):=x:, (132)=,

6、(133)3:x=9:15, (134)=, (135):=:x,(136)=x:,(137)0.1:0.5=, (138)1.25:0.25=x:1.6, (139)=0.8:, (140)0.75:X=0.51:3.4, (141)12:20=:X, (142)=, (143):=x:9,(144)4:x=5,(145):=:x,(146)0.5:x=:0.25,(147)=,(148):=:x,(149)15:x=0.2:44,(150):=20:x, (151)=, (152)40:x=2.5:15, (153)3:8=x:2.4, (154):=x:15,(155):x=6:, (1

7、56)8.5:x=4:12 (157)0.1:0.5=(158) :x=:(159)1.2:3=:x(160)=, (161)8:30=24:x, (162) :=x:,(163)x:=16:(164)15:6=10:x, (165):X=:2,(166)=0.8:1.2, (167)=, (168)x:3.25=:,(169):=x:,(170)45:54=60:x, (171)3:2.5=x:40,(172):=x:,(173)=, (174)6.5:x=3.25:4, (175):=x:9,(176)8:30=24:X, (177):=X:,(178)=, (179)6.5:x=3.25

8、:4, (180)75:x=25:15, (181)24%x+8%x=16, (182)1.8:x=:, (183)=, 参照答案:(1)x:8=:, x=8, x5=65, x=30(2):=:X, x=, x=, x= x=(3)16:x=0.75:, 0.75x=16, x=30, x=30, x=40(4)(x0.4):8=, (x0.4):8=3:2, 2(x0.4)=83, 2x0.8=24, 2X0.8+0.8=24+0.8, 2x=24.8, 2x2=24.82, x=12.4(5)1.6:x=0.125:0.5 0.125x=0.51.6 0.125x8=0.88, x=6.

9、4(6):=:x, x=, x=, x=(7)x:1.2=3:4, 4x=1.23, 4x4=3.64, x=0.9(8)12:3=:x, 12x=, 12x12=312, x=0.25(9)=5:3, 3x=52.4, 3x=12, 3x3=123, x=4(10)0.8:4=x:8, 4x=0.88, 4x4=6.44, x=1.6;(11)16:x=2.4:3, 2.4x=163, 2.4x2.4=482.4, x=20;(12):x=:, x=, x=, x=;(13)=, 4x=3(840x), 4x=25203x, 4x+3x=25203x+3x, 7x7=25207, x=360

10、(14)x:7.5=0.16:1, 1x=7.50.16, 1x1=1.21, x=0.64(15)(4.5x):0.6=(10+x):2, 0.6(10+x)=(4.5x)2, 6+0.6x=92x, 6+0.6x+2x=92x+2x, 6+2.6x=9, 6+2.6x6=96, 2.6x2.6=32.6, x=(16), 0.7x=7%, 0.7x0.7=0.7, x=;(17), 5x=81, 5x5=105, x=2(18) =, 3x=82, 3x3=163, x=5;(19)X:18.5=5:4, 4x=18.55, 4x4=92.54, x=23.125;(20)8:X=:, x

11、=8, x=2, x=6;(21)0.5:0.25=0.2:X, 0.5x=0.250.2, 0.5x0.5=0.050.5, x=0.1(22)x:12=:2.8, 2.8x=12, 2.8x2.8=212.8, x=7.5;(23):=x:, x=, x=, x=;(24)=, 2x=3.25, 2x2=162, x=8(25)9:54.5:x, 9x=54.5, 9x9=22.59, x=2.5;(26):x:, , , x=;(27), 0.4x=280.1,0.4x0.4=2.80.4, x=7;(28):x:8, , , x=6(29)x:51:17, 17x=, 17x17=,

12、x=;(30):, x=2.4(31)6:x=4:7, 4x=67, 4x=42, 4x4=424, x=10.5;(32)30:x=54:36, 54x=3036, 54x=1080, 54x54=108054, x=20;(33)2.5:15=:x, 2.5x=15, 2.5x=5, 2.5x2.5=52.5, x=2;(34)=, 0.6x=20.15, 0.6x=0.3,0.6x0.6=0.30.6, x=0.5(35):=:x, x=, x=, x=;(36)x:17=, 3.4x=174, 3.4x3.4=683.4, x=20;(37)=, 1.5x=93.5,1.5x1.5=3

13、1.51.5, x=21(38)1.3:x=5.2:20, 5.2x=1.320, 5.2x5.2=265.2, x=5;(39)x:36=6:18, 18x=366, 18x18=21618, x=12;(40),x=,x=, x=(41):=x:9 x=9 x= x=54;(42):x=: x= x= x=(43)x:42=:10, 10x=42, 10x=30, 10x10=3010, x=3;(44)=, 0.8x=2.415, 0.8x=36, 0.8x0.8=360.8, x=45;(45):x=:6, x=6, x=3, x=3, x=4 (46)=, 1.5x=5,1.5x1.

14、5=51.5, x=,(47):x=:,x=,x4=4, x=(48)20:x=: x=20, x=16, x=56;(49)x:0.4=0.6:0.3, 0.3x=0.40.6, 0.3x0.3=0.240.3, x=0.8;(50)=, 18x=253.6, 18x18=9018, x=5(51)8:9=4:x, 8x=94, 8x8=368, x=4.5;(52)3:4=x:1.2, 4x=31.2, 4x4=3.64, x=0.9;(53)=, 1.2x=1.56,1.2x1.2=91.2, x=7.5;(54)=, 15x=44, 15x15=1615, x=1;(55)x:=:,x

15、=,x=, x=(56), X=, X=, X=(57)=x: x=, x=, x=, x=2(58) 6:x=4.5:1, 4.5x=61,4.5x4.5=8.14.5, x=1.8(59) 3:x=:1, x=31, x=, x=, x=, x=10(60)0.72:x=9.6:4.8, 9.6x=0.724.8, 9.6x9.6=3.4569.6, x=0.36;(61)12:=x:0.5,x=120.5,x=6, x=10;(62):=,x=15,x=, x=8;(63)x:=28:,x=28,x=7, x=42(64)x:6.4=12:8, 8x=6.412, 8x=76.8, 8x

16、8=76.88, x=9.6;(65):x=:3,x=,x=, x=;(66)=, 0.3x=8.1,0.3x0.3=8.10.8, x=27(67), 6x=0.40.9, 6x=0.36, 6x6=0.366, x=0.06;(68),x=,x=,x=, x=;(69)=8:x,x=8,x=,x=, x=48;(70), 0.25x=, 0.25x=3.75, 0.25x0.25=3.750.25, x=15;(71)4:1=x:, x=4, x=2;(72):3=x:0.7, 3x=0.7, 3x=0.6, 3x3=0.63, x=0.2(73)x:1.8=5:14, 14x=1.85,

17、 14x=9, x=;(74)=,x=,x=1, x=;(74)75:x=2.5:12, 2.5x=7512, 2.5x=900, x=360;(75)0.75:=x:,x=,x=, x=(76)25:7=x:35 7x=2535 7x=875 x=125;(77)514:35=57:x 514x=3557 514x=1995 x=3;(78)23:x=12:14 12x=2314 12x=322 x=26;(79)x:15=13:56 56x=1513 56x=195 x=3;(80)34:x=54:2 54x=342 54x=68 x=1;(81)x:0.75=81.25 x=0.7581

18、.25 x=60.9375(82)x:=:4, 4x=, 4x4=4, x=;(83)=, 4.5x=90.8,4.5x4.5=7.24.5, x=1.6;(84):=X:9,x=9,x=6, x=7.2(85)0.75:=X:,X=0.75, 9X=1.52, X=1.529, X=;(86)=, 4x=2.55, x=2.554, x=3;(87)3.6:x=1.8:3, 1.8x=3.63, x=3.631.8, x=6(88), , , x=;(89), 0.2x=0.054, 0.2x0.2=0.20.2, x=1;(90)8:13=20:x, 8x=1320, 8x8=2608,

19、x=32.5;(91)x:2.5=4:0.5, 0.5x=2.54, 0.5x0.5=100.5, x=20;(92), 4x=2.64.8, 4x4=12.484, x=3.12;(93), 0.1x=0.50.4, 0.1x0.1=0.20.1, x=2(94)x:36=3:54, 54x=363, 54x54=10854, x=2;(95)0.6:0.8=x:20, 0.8x=0.620, 0.8x0.8=120.8, x=15;(96):x=:12, x=12, x=6, x=9;(97)=, 2x=78, 2x2=562, x=28(98)0.7:18=21:x 0.7x=2118

20、x=540;(98)= 48x=364 x=3;(99)1.5:2.5=12:x 1.5x=2.512 x=20;(100):=:x x= x=;(101)= 2x=22.43 x=33.6;(102)=2.5x=1.251.6x=8(103):=:x,x=,x=,x=;(104)(6+x):4=9:5(6+x)5=36,5x=6,x=;(105)=,3x=0.752,3x=1.5,x=0.5;(106)=,1.2x=0.8,x=(107)4:16=9:x, 4x=916, 4x4=9164, x=36;(108):=x:,x=,x2=2, x=;(109)=, 0.5x=0.05, 0.5x

21、0.5=0.050.5, x=0.1(110)0.5:x=: 解:x=0.5 x=1.2;(111)= 解:0.25x=1.251.6 0.25x=2 x=8;(112)=: x=75x= x=45; (113):=:x 解:x=x= x=(115)X:=1.25:3, 3x=1.25, 3x=, 3x3=3, x=;(116), 14x=0.75, 14x=3.5, 14x14=3.514, x=0.25(117)8:x=1.8:3.6, 1.8x=83.6, 1.8x=28.81.8, x=16;(118):=6:x,x=6,x=4, x=8;(119)6:=x:,x=6,x=,x=, x

22、=;(120), 3.2x=0.68, 3.2x=4.8, 3.2x3.2=4.83.2, x=1.5(121)2:5=X:6 5X=26 5X=12 5X5=125 X=2.4;(122):=X:X=X=X= X=;(123)= 4.5X=90.8 4.5X=7.24.5X4.5=7.24.5 X=1.6;(124):=:XX=X=X= X=;(125):X=3:12 3X=12 3X=9 3X3=93 X=3;(126)0.4:0.8= 0.8X=0.44 0.8X=1.6 0.8X0.8=1.60.8 X=2(127):=x:,x=,x=, x=,(128):x=3:12, 3x=12,

23、 3x3=93, x=3(129)=, 0.9x=4.50.8, x=, x=4;(130)2.7:x=54:18, 54x=2.718, x=, x=0.9;(131):=x:,x=,x=, x=, x=; (132)=, 2.25x=1.251.6, x=, x=(133)3:x=9:15, 9x=315, 9x9=459, x=5;(134)=, 75x=251.2, 75x75=3075, x=0.4;(135):=:x, , 3, x=(136)=x:,=, x=, x=, x=;(137)0.1:0.5=, 0.1x=0.50.4, x=, x=2;(138)1.25:0.25=x

24、:1.6, 0.25x=1.251.6, x=, x=8;(139)=0.8:, 0.8x=, x=, x=, x=(140)0.75:X=0.51:3.4, 0.51X=0.753.4, 0.51X=2.55, 0.51X0.51=2.550.51, X=5;(141)12:20=:X, 12X=20, 12X=16, 12X12=1612, X=(142)=, 8x=210.4, x=, x=1.05,(143):=x:9,x=9,x=6, x=6, x=,(144)4:x=5,x=4, x=4, x=;(145):=:x,x=,x=, x=, x=(146)0.5:x=:0.25,x=0

25、.250.5,x=1.25, x=1.25, x=1.875,(147)=,75x=251.2, x=, x=0.4,(148):=:x,x=,x=, x=, x=,(149)15:x=0.2:44, 0.2x=1544, x=, x=3300(150):=20:x, x=;(151)=, 3x=98, 3x3=723, x=24;(152)40:x=2.5:15, 2.5x=4015, 2.5x2.5=6002.5, x=240(153)3:8=x:2.4, 8x=32.4, 8x8=7.28, x=0.9;(154):=x:15,x=15,x=, x=40;(155):x=6:, 6x=,

26、 6x6=6, x=(156)8.5:x=4:12 4x=8.512,4x=102, x=25.5;(157)0.1:0.5=0.1x=0.50.4,0.1x=0.2,解得x=2;(158) :x=:x=,x=,解得x=;(159)1.2:3=:x1.2x=3,1.2x=1.2,解得x=1(160)=, 14x=3.5, 14x14=3.514, x=0.25,(161)8:30=24:x, 8x=3024,8x8=30248, x=90,(162):=x:,x=,x=, x=,(163)x:=16:x=16,x4=4, x=(164)15:6=10:x, 15x=610, 15x15=601

27、5, x=4;(165):X=:2,x=2,x=, x=3;(166)=0.8:1.2, 0.8x=61.2,0.8x0.8=7.20.8, x=9(167)=, 3x=0.50.8, 3x3=0.43, x=;(168)x:3.25=:, x=;(169):=x:, x=(170)45:54=60:x, 45x=5460, 45x45=324045, x=72;(171)3:2.5=x:40, 2.5x=340, 2.5x2.5=1202.5, x=48;(172):=x:,x=,x=, x=;(173)=, 40x=245,40x40=12040, x=3;(174)6.5:x=3.25:4, 3.25x=6.54,3.25x3.25=263.25, x=8;(175):=x:9, x=9, x=6, x=7.2(176)8:30=24:X, 8x=3024, 8x8=7208, x=90;(177):=X:,x=,x=, x=;(178)=, 40x=5, 40x40=12040, x=3;(179)6.5:x=3.25:4,

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