UCLN(45,840,150,900)
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UCLN(45;840;150;900)
UCLN(45;840;150;900;)=
UCLN(45;840;150;900)=????
UCLN(45;840;150;900)
45=3^2.5
840=2^2.3.7.2.5=2^3.3.5.7
150=3.5.2.5=2.3.5^2
900=3^2.2.5=3^2.2.3.5
ƯCLN(45,840,150,900)=3.5=15
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UCLN(45;840;150;900)
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ƯCLN(45;840;150;900) là
ước chung lớn nhất của 45;840;150;900=
1,tim UCLN = 2 cach
a,UCLN ( 120,50 )
b,UCLN( 200,40 )
c,UCLN(60,80)
d,UCLN(90,150)
g,UCLN(160,240)
a. C1 : \(\hept{\begin{cases}120=2^3.3.5\\50=2.5^2\end{cases}\Rightarrow UCLN\left(120,50\right)=2.5=10}\)
C2 : ta có : \(\frac{120}{50}=\frac{12}{5}\Rightarrow UCLN\left(120,50\right)=120:12=10\)
b. C1 : \(\hept{\begin{cases}200=2^3.5^2\\40=2^3.5\end{cases}\Rightarrow UCLN\left(200,40\right)=2^3.5=40}\)
C2 : ta có : \(\frac{200}{40}=\frac{5}{1}\Rightarrow UCLN\left(200,40\right)=200:5=40\)
tương tư jcho các ý c,d g bạn nhé
hãy tìm :
1. UCLN ( 56 , 140 )
2.UCLN (15 , 19 )
3.UCLN (60 , 180 )
4. UCLN ( 24 , 84 , 180 )
5. UCLN ( 16 , 80 , 176 )
6. UCLN ( 18 , 30 , 77 )
1. UCLN ( 56 , 140 ) ==>28
2.UCLN (15 , 19 )==>1
3.UCLN (60 , 180 )==>60
4. UCLN ( 24 , 84 , 180 )==>12
5. UCLN ( 16 , 80 , 176 )==>16
6. UCLN ( 18 , 30 , 77 )==>1
a)UCLN(56,140)
56=23.7
140=2.5.7
=>UCLN(56,140)=2.7=14
b)UCLN(15,19)
15=3.5
19=1.19
=>UCLN(15,19)=1
c)UCLN(60,180)
60=22.3.5
180=22.32.5
=>UCLN(60,180)=22.3.5=60
d)UCLN(24,84,180)
24=23.3
84=22.3.7
180=22.33.5
=>UCLN(24,84,180)=22.3=12
e)UCLN(16,80,176)
16=24
80=24.5
176=24.11
=>UCLN(16,80,176)=24=16
f)UCLN(18,30,77)
18=32.2
30=2.3.5
77=7.11
=>UCLN(18,30,77)=1
1.28
2.1
3.60
4.12
5.16
6.1
tim:
a,UCLN(1,8)
b,UCLN(8,1,12)
C,UCLN(24,72)
D,UCLN(24,84,180)
a,UCLN(1,8) = 1
b,UCLN(8,1,12) = 1
C,UCLN(24,72) = 24
D,UCLN(24,84,180) = 12
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