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求比值和化简比专项练习60题(有答案)ok

2023-04-18 来源:意榕旅游网


1.化简下面各比: 63:54

求比值和化简比专项练习60题(有答案)ok 求比值和化简比专项练习

60题

6:2.4 :.

2.求下面各比的比值 28:14

3.求比值 60:25 3: 1.5小时:45分.

4.求比值:

25:0.4 5. 比 1.2:8 35:200

6.化简比并求比值 0.5吨:200千克

5:4

:.

最简整数比

比值

7.化简比、求比值:

5.4:18 20分钟:2小时 3吨:600千克.

8.求下列各比的比值. 18:48

9.化简比

①:0.75 ②分米:厘米.

求比值和化简比---

1

2.5:0.125.

10.求比值. 13:39

11.求比值:①2:0.5 ②:

化简比:③:0.25 ④200:0.5.

12.化简比.

12:18 0.5:12 2米:4厘米.

13.化简比:

①81:27 ②0.3:0.09 ③5:

14.化简下列比:

:7.8 3:

0.46:1.23

15.求比值(比值=比的前项÷比的后项) 0.6:0.16= := 0.8:= 48:40=

16.化简下列各比 45:30= 0.75:2= := 0.125:==

2

④0.25:1.

17.(1)求下列各比的比值. 2:

(2)化简下列各比.

1.5千米:300米 5:0.45 :.

18.先化简,再求比值 :0.85 :0.04.

19.仔仔细细化简比. 25:100 1:

20.化简下列各比.

10:18

21.求比值. (1)1:

(2)36:4

22.求比值 ①:

②0.25:0.45

23.化简比.

1.8:1.2=

24.化简比.

(1)8:36 (2)0.25:0.5

18:0.9

0.4:

0.25:8 1.5米:30厘米. (3)0.7:0.8.

③500千克:吨 ④:. := (3):. 3

25.求比值 ①50:200

26.化简比 ①51:34

②0.875:

27.化简下列的比,并求出比值

60:45 0.35: 45分:1.5小时.

28.化简下面各比 21:35

: :

36:2.

③:.

②:

③0.6:0.03.

29.求下面各比的比值.

2.5:0.45 1:1 40分钟:时..

30.化简比

0.6:0.16 : 0.125:.

31.求比值.

(1)1: (2)千米:500米 (3)1.4:

(4)1.25:6.5 (5):0.75

32.化简下面各比,并求出比值:

:15 0.8: 1.5:.

4

(6)2:

33.化简比 63:27 45分:1小时 0.07:4.2 2.5千克:400克

: 400厘米:6米 : 500毫升:1升

34.求比值

24:32=

35.化简比、求比值.

36.化简比.

7:0.24

37.(1)求比值.

14:0.72 (2)化简比.

7:0.24

38.化简比.

(1)12:16

39.求比值

60:25

56:14= 0.4:

12.6:0.4 :1 12.6:0.4 (2):1

3:0.18 15:25= 0.3吨:150千克 :1.

3:2

20:1. (3)4.5:2.7 1.5小时:45分. 5

:= 0.6:.

4):0.1

40.化简下列各比. 7.2:8.1 0.5:

千克:450克.

41.化简下列各比.

24:48 2.8:0.7 1:0.25.

42.化简下列比: 36:24

3.5吨:750千克

43.求比值:

80:25 4: 1.2时:40分.

44.化简比 18:24

吨:750千克

45.

①: ②0.14:0.56; ③:;

46.化简比.

7.5:0.75

47.化简比.

(1)0.25吨:750千克 (2):.

6

:. :. ④2:0.5.

48.化简比.

1.8:2.4

1.2吨:750千克.

49.先化成最简整数比,再求比值.

6:18 0.35:0.45 :.

50.求下面各比的比值.

5:8= 0.4:0.16=

51.化简比. ①

②1.4:0.35

52.化简比.

0.25:1.6

53.求比值:

:; 7.5:0.75.

54.求比值.

0.25:0.45.

55.化简比. 18:24 : 1.8:1.2

:= ③

. :. :.

7

0.5:=

56.把下面各比化成最简单的整数比.

8:12= 0.25:0.45=

57.化简下面各比. 27:63 :

小时:25分 米:50厘米.

=

58.化简比,结果用分数表示.

= 0.8:0.04=

吨:750千克=

小时:75分钟=

=

59.化简比并求比值.

13:39 0.8:0.125

60.化简比

①12:18 ②: ③1.8:0.09 ③吨:375千克.

10千克:1000克.

8

参考答案:

1.(1)63:54, =(63÷9):(54÷9), =7:6; 63:54, =63÷54, =,

(2)6:2.4, =(6÷1.2):(2.4÷1.2), =5:2; 6:2.4, =6÷2.4, =2.5; (3)

=108:72,

=(108÷36):(72÷36),

=3:2;

=108÷72=; (4):, =(×24):(×24), =21:20; :, =÷, =×, =

2.(1)28:14, =(28÷14):(14÷14), =2:1, 28:14, =28÷14, =2;

(2)5:4,

因为5和4就是互质数,

所以最简整数比仍然是:5:4,5:4, =5÷4, =;

=500:200,

(3)

=(500÷100):(200÷100), =5:2,

=63:42, 0.5吨:200千克, =(63÷21):(42÷21), =500千克÷200千克, =3:2, =2.5;

=63÷42, (2)时:40分, =1.5; =48分:40分, (4):, =48:40, =(48÷8):(40÷8), =(×8):(×8), =6:5; =6:5; 时:40分,

:, =48分÷40分, =1.2 =÷,

7.5.4:18, =×, =(5.4×10):(18×10), =54:180, =.

=(54÷18):(180÷18), =3:10; 3.(1)60:25=60÷25=,

5.4:18, =5.4÷18, (2)3:=3

=3×4=12,

=0.3;

20分钟:2小时, (3)1.5小时:45分钟=90分钟:

=20分钟:120分钟, 45分钟=90:45=90÷45=2 =20:120, 4.(1)25:0.4, =(20÷20):(120÷20), =25÷0.4, =1:6; =62.5;

(2),

20分钟:2小时, =20分钟:120分钟; =,

=20÷120, =;

=. 3吨:600千克,

5. =3000千克:600千克, 比 最简整数比

比值 =3000:600,

1.2:8 3:20

=(3000÷600):(600÷600),=5:1; 35:200

7:40

3吨:600千克,

15:8

=3000千克:600千克, =3000:600, =3000÷600, 6.(1)0.5吨:200千克, =5 =500千克:200千克,

8.(1)18:48,

9

=18÷48, =;

(2):,

=÷,

=;

(3)2.5:0.125,

=2.5÷0.125, =20

9.(1):0.75, =:,

=(×28):(×28),=8:21,

(2)分米:厘米,=厘米:厘米, =(

×):(×),=14:1

10.(1)13:39, =13÷39, =; (2):,

=,

=;

(3):0.6, =0.5:0.6, =0.5÷0.6, =

11.①2:0.5==4;②:, =

÷

=×, =

③:0.25,

=:,

=4:3;

④200:0.5, =200:,

=400:1

12.12:18, =(12÷6):(18÷6), =2:3, 0.5:12, =(0.5×2):(12×2), =1:24;

2米:4厘米,

=200厘米:4厘米, =200:4, =(200÷4):(4÷4), =50:1 13.(1)81:27, =(81÷27):(27÷27), =3:1,

(2)0.3:0.09, =(0.3×100):(0.09×100),=30:9, =(30÷3):(9÷3), =10:3, (3)5:,

=(5×5):(×5), =25:1,

(4)0.25:1, =(0.25×100):(1×100), =25:100, =(25÷25):(100÷25), =1:4

14.(1):7.8,

=(×5):(7.8×5),

=2:39; (2)3:,

10

=(3×15):(×15), =50:12,

=(50÷2):(12÷2), =25:6;

(3)0.46:1.23, =(0.46×100):(1.23×100), =46:123 15.(1)0.6:0.16, =0.6÷0.16, =

(2):, =÷, =;

(3)0.8:, =0.8÷0.5, =;

(4)48:40,

=48÷40, =.

16.(1)45:30, =(45÷15):(30÷15), =3:2;

(2)0.75:2, =(0.75×20):(2×20), =15:40, =3:8;

(3):, =(×6):(×6), =5:1; (4)0.125:, =(×8):(×8), =1:5 17.(1)2:, =2÷,

=8; :, =÷,

=; =26

(2)1.5千米:300米,

=(1500÷300):(300÷300), =5:1; 5:0.45, =(5×20):(0.45×20), =100:9; :,

=(×28):(×28), =21:16

18.(1)1:0.85, =(×20):(×20),

=35:17; 1:0.85, =35:17, =35÷17, =

(2)2:0.04,

=(2.5×100):(0.04×100),

=250:4, =125:2; 2:0.04,

=125:2, =62.5 19.(1)25:100=(25÷25):(100÷25)=1:4;

(2):=(×35):(×35)=14:10=7:5;

(3)1:=(1×9):()=9:

5;

(4)18:0.9=(18×10):(0.9×10)=180:9=20:1; (5)0.4:

=0.4:0.1=(0.4×10):

(0.1×10)=4:1 20.(1):, =(×3):(×3), =4:2, =2:1;

(2)10:18, =(10÷2):(÷2), =5:9;

(3)0.25:8, =(0.25×4):(8×4), =1:32;

(4)1.5米:30厘米, =150厘米:30厘米, =(150÷30):(30÷30), =5:1

21.(1)(1)1:, =1÷, =4;

(2)36:4, =36÷4, =9;

(3)0.7:0.8, =0.7÷0.8, =

22.(1):, =÷, =×8, =;

11

(2)0.25:0.45,

=(0.25×20):(0.45×20) =5:9, =5÷9, =;

(3)500千克:吨 =吨:吨 =÷, =×, =; (4):, =÷, =×, =;

23.(1)1.8:1.2, =(1.8×5):(1.2×5), =9:6, =3:2; (2):,

=(×12):(×12), =15:8

24.(1)8:36,' =(8÷4):(36÷4), =2:9; (2)0.25:0.5, =(0.25×20):(0.5×20), =5:10, =1:2;

(3):, =(×4):(×4),

=1:3 25.(1)50:200=50÷200=0.25;(2):=÷=;

(3)0.6:0.03=0.6÷0.03=20 26.(1)51:34, =(51÷17):(34÷17), =3:2; (2)0.875:, =

=(×56):(×56), =49:32, (3):, =(×72):(×72),

=45:40, =(45÷5):(40÷5), =9:8

27.60:45=(60÷15):(45÷15)=4:3,

60:45=60÷45=;

0.35:=(0.35×6):(×6)=2.1:1=(2.1×10):(1×10)=21:10, 0.35:=0.35

=2.1;

1.5小时=90分

45分:1.5小时=45分:90分=45:90=(45÷45):(90÷45)=1:2, 45分:1.5小时=45÷90=0.5

28.化简下面各比 (1)21:35, =(21÷7):(35÷7), =3:5; (2):, =(×36):(×36), =30:16, =(30÷2):(16÷2), =15:8; (3):, =(×9):(×9), =6:3, =(6÷3):(3÷30,

=2:1;

(4)36:2, =(36÷2):(2÷2), =18:1 29.(1)2.5:0.45, =(2.5×20):(0.45×20), =50:9, =5;

(2)1:1, =:, =():(

),=5:4, =1;

(3)40分钟:时,

=时:时,

=(

3):(

),

=2:5, =.

30.(1)0.6:0.16,

=(0.6×100):(0.16×100),=60:16, =(60÷4):(16÷4), =15:4; (2):, =(×21):(×21), =14:18, =(14÷2):(18÷2), =7:9; (3)0.125:, =(0.125×8):(×8), =1:5

31.(1)1:,

=1÷,

12

=,

(2)千米:500米, =750米:500米, =750÷500, =1.5, (3)1.4:, =1.4÷, =

(4)1.25:6.5,

=1.25÷6.5, =

(5):0.75,

=÷0.75,

=,

(6)2:, =2÷, =7.

32.:15=5:120=1:24=; 0.8:=3.2:3=32:30=

1.5:=7.5:3=75:30=

33.63:27=(63÷9):(27÷9)=7:

3

因1小时=60分,所以,45分:1小时=45分:60分=(45÷15):(60÷15)=3:4 0.07:4.2=(0.07×100):(4.2×100)=7:420=(7÷7):(420÷7)=1:60 因2.5千克=2500克,所以,2.5千克:400克=2500克:400克=(2500÷100):(400÷100)=25:4 :=(

):(

)=2:3 因400厘米=4米,所以,400厘米:6米=4米:6米=(4÷2):(6÷2)=2:3

:=(

):(

)=5:3 =0.6

=(×8):(×8),

因1升=1000毫升,所以,500毫升:1升=500毫升:1000毫升=(500÷500):(1000÷500)=1:2 34.24:32=24÷32==

56:14=56÷14=4 15:25=15÷25==

:==

=

35.(1)

=140:35,

=(140÷35):(35÷35),

=4:1;

=140÷35=4;

(2)0.4:, =:, =(×):(×

),

=3:5; 0.4:=0.4,

=0.4×,

=0.6;

(3)0.3吨:150千克, =300:150, =(300÷150):(150÷150), =2:1;

0.3吨:150千克, =300:150, =300÷150, =2;

(4)0.6:, =:,

=(×15):(×15), =9:10; 0.6:,

=0.6×, =0.9

36.7:0.24=

:0.24=

:=:

=(

):

)=180:6=(180÷6):

(6÷6)=30:1

12.6:0.4=(12.6×10)(:0.4×10)=126:4=(126÷2):(4÷2)=63:2 :1=:=():

)=1:24

37.(1)14:0.72,

=14.4÷0.72,

=20; :1,

=

=; 3:2, =, =.

(2)7:0.24,

=(7.2×50):(0.24×50),

=360:12, =(360÷12):(12÷12), =30:1; 12.6:0.4, =(12.6×5):(0.4×5), =63:2;

20:1是最简比,无需化简了 38.(1)12:16, =(12÷4):(16÷4), =3:4; (2):1,

13

=6:9,

=2:3;

(3)4.5:2.7, =(4.5×10÷9):(2.7×10÷9), =5:3; (4)

:0.1,

=0.6:0.1,

=(0.6×10):(0.1×10), =6:1 39.(1)60:25, =60÷25, =2.4,

(2)3:0.18, =3÷, =3×,

=

(3)1.5小时:45分,

=90分:45分, =90÷45, =2 40.:, =(×4):(×4), =6:5; 7.2:8.1, =(7.2÷0.9):(8.1÷0.9), =8:9; 0.5:,

=0.5:0.25, =(0.5÷0.25):(0.25÷0.25), =2:1; 千克:450克,

=600克:450克, =(600÷150):(450÷150), =4:3

41.:=1:6; 24:48=1:2;

2.8:0.7=28:7=4:1; 1:0.25=100:25=4:1.

42.(1)36:24, =(36÷12):(24÷12), =3:2; (2)2:3, =:,

=(÷7):(÷7), =:,

=(×6):(×6),

=2:3;

(3)3.5吨:750千克, =3500千克:750千克, =3500:750, =(3500÷250):(750÷250), =14:3; (4):, =(÷5):(÷5), =:,

=(

×88):(×88),

=8:11

43.(1)80:25, =80÷25, =

(2)4:, =4

=4×3,

=12;

(3)1.2时:40分, =72分:40分, =72÷40, =.

44.18:24=(18÷6):(24÷6)=3:4; :=(×6):(×6)=21:14=3:

2;

吨:750千克=3500千克:750千克=14:3;

:=(×72):(×72)=45:40=9:8.

故答案为:3:4,3:2,14:3,9:8

45.①:==

=

②0.14:0.56=

==

=;

③:==

=2;

④2:0.5=2:=2:=2÷=2×2=4

46.:

=(×21):(×21),

=9:5;

7.5:0.75, =(7.5×100):(0.75×100), =750:75, =(750÷75):(75÷75), =10:1; :

=(×60):(

×60),

=45:32

47.(1)0.25吨=250千克,

0.25吨:750千克=250:750=1:3; (2):

=

=

48.(1):, =(×

:(×24),

=20:21;

(2)1.8:2.4, =(1.8×5):(2.4×5), =9:12, =3:4;

14

(3)1.2吨:750千克, =1200千克:750千克, =(1200÷150):(750÷150), =8:5 49.(1)6:18, =(6÷6):(18÷6), =1:3; 6:18, =1:3, =1÷3, =;

(2)0.35:0.45, =(0.35×20):(0.45×20), =7:9; 0.35:0.45, =7:9, =7÷9, =; (3):,

=(×6):(×6), =2:1; :,

=2:1, =2÷1, =2. 50.(1)5:8 =5÷8, =0.625;

(2)0.4:0.16, =0.4÷0.16, =2.5; (3):, =÷,

=

(4)0.5:,

=0.5÷,

=.

51.①:

=(

×105):(

×105),

=24:50,

=12:25;

②1.4:0.35, =(1.4×20):(0.35×20), =28:7, =4:1; ③

=150:16,

=(150÷2):(16÷2), =75:8 52.

=152:88=19:11;

0.25:1.6=25:160=5:32; :=(×16):(×16)=6:9=2:

3. 53.(1):,

=, =×,

=;

(2)7.5:0.75,

=7.5÷0.75, =10.

54.(1):, =

, =2;

(2)0.25:0.45, =0.25÷0.45, =.

55.(1)18:24, =(18÷6):(24÷6), =3:4; (2):,

=(×8):(×8), =6:5;

(3)1.8:1.2, =(1.8×10):(1.2×10), =18:12, =(18÷6):(12÷6), =3:2; (4):, =(×

):(×

),

=9:8 56.(1)8:12=(8÷4):(12÷4)=2:3;

(2)0.25:0.45=(0.25×20):(0.45×20)=5:9; (3):=(×8):(×8)=2:1.故答案为:2:3,5:9,2:1 57.(1)27:63, =(27÷9):(63÷9), =3:7; (2):, =(×24):(×24), =21:20;

(3)小时:25分,

=15分:25分,

=15:25, =(15÷5):(25÷5), =3:5; (4)米:50厘米, =厘米:50厘米, =:50,

=(

×3):(50×3),

=100:150. =(100÷50):(150÷50), =2:3 58.:, =(×6):(×6),

15

=;

0.8:0.04, =:

=(×25):(×25),

=;

吨:750千克, =:,

=(×8):(×8), =,

小时:75分钟, =:,

=(×4):(×4), =; :, =(×):(

×

),=

59.(1)13:39,

=(13÷13):(39÷13), =1:3;

1:3=1÷3=;

(2)0.8:0.125, =(0.8×1000):(0.125×1000),=800:125, =(800÷25):(125÷25), =32:5; 32:5=32÷5=;

(3):,

=(×20):(×20), =8:5; 8:5=8÷5=;

(4)10千克:1000克, =10000克:1000克, =(10000÷1000):(1000÷1000), =10:1; 10:1=10÷1=10 60.(1)12:18, =2:3; (2):

=:,

=(

):(

),

=(

):(

),

=10:9;

(3)1.8:0.09, =(1.8×100):(0.09×100), =180:9, =20:1;

(4)375千克=吨,

=2:3.

故答案为:2:3;10:9;20;2:3.

=(12÷6):(18÷6),

16

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