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1. Write out their prime factorizations. 2. Determine which prime factors are shared by all 3 numbers. 3. Multiply them together. 4. That product is the gcf.
For example, the gcf of 84, 126, and 686 is 14 because
1. 84=2x2x3x7
126=2x3x3x7
686=2x7x7x7
2. All three numbers share 2 and 7 as common prime factors.
3. 2x7=14
4. 14 is the gcf
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What is the GCF of 4 6 and 9?
The GCF for those three numbers is.... 1 !
The gcf of three numbers is 9 the sum of the numbers is 90 find the three numbers?
18, 27, 45
Which are the three numbers that have 9 as a gcf?
9, 18 and 27
What are three numbers whose gcf is 15?
the answer is 45 60 and 90
What is the gcf of 36 48 48?
factor all three then use the prime numbers that are in all three. 36=2x2x3x3 48=2x2x2x2x3 2x2x3=12 the gcf
What is the gcf of 5 and 20 and 35?
The GCF of these three numbers is 5.
What is the gcf of 100 200 140?
The GCF of all three numbers is 20 !
What is the gcf of 33 76 and 95?
The gcf of the given three numbers is 1
What three numbers have a GCF of 15?
15, 30 and 45 have a GCF of 15.
Do 23 46 and 138 have a gcf?
The GCF of the given three numbers is 23
What is the gcf of 3 10and 6?
The GCF of the given three numbers is 1
What is the gcf of 15 35 and 3?
The GCF of the given three numbers is 1
What is 42 154 168s gcf?
The GCF of the given three numbers is 14
What is the GCF of 92 156 and 169?
The GCF of the given three numbers is 1
What is the gcf of 16 9 and 45?
The GCF of the given three numbers is 1
What is 28 49 84s gcf?
The GCF of the given three numbers is 7
What is the gcf of 10 35 75?
The GCF of the given three numbers is 5
