Find the GCF 15 , 45 , 60

Math
15 , 45 , 60
Find the common factors for the numerical part:
15,45,60
The factors for 15 are 1,3,5,15.
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The factors for 15 are all numbers between 1 and 15, which divide 15 evenly.
Check numbers between 1 and 15
Find the factor pairs of 15 where x⋅y=15.
xy11535
List the factors for 15.
1,3,5,15
1,3,5,15
The factors for 45 are 1,3,5,9,15,45.
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The factors for 45 are all numbers between 1 and 45, which divide 45 evenly.
Check numbers between 1 and 45
Find the factor pairs of 45 where x⋅y=45.
xy14531559
List the factors for 45.
1,3,5,9,15,45
1,3,5,9,15,45
The factors for 60 are 1,2,3,4,5,6,10,12,15,20,30,60.
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The factors for 60 are all numbers between 1 and 60, which divide 60 evenly.
Check numbers between 1 and 60
Find the factor pairs of 60 where x⋅y=60.
xy160230320415512610
List the factors for 60.
1,2,3,4,5,6,10,12,15,20,30,60
1,2,3,4,5,6,10,12,15,20,30,60
List all the factors for 15,45,60 to find the common factors.
15: 1,3,5,15
45: 1,3,5,9,15,45
60: 1,2,3,4,5,6,10,12,15,20,30,60
The common factors for 15,45,60 are 1,3,5,15.
1,3,5,15
The GCF (HCF) of the numerical factors 1,3,5,15 is 15.
15
Find the GCF 15 , 45 , 60

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