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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