GREATEST COMMON FACTOR

What does GCF mean?

What is a greatest common factor?

• It is the highest number that divides the given numbers with a remainder.

• It is the highest number that divides the given numbers without a remainder.

• It is the least number that divides the given numbers without a remainder.

• It is the least number that divides the given numbers with a remainder.

In finding the GCF of two or more numbers by continuous division, when do you stop dividing?

• When all the remaining numbers do not have any common multiple

• When all the remaining numbers have a common factor

• When all the remaining numbers are prime numbers

• When all the remaining numbers do not have any common factor

What is the last step in finding the greatest common factor of a set of numbers by continuous division?

• Multiply the divisors which are written vertically on the left.

• Multiply the divisors which are written horizontally.

• Multiply the remaining numbers.

• Multiply the remaining numbers written horizontally.

Which pair of numbers has the GCF of 8?

• 4 and 8

• 8 and 80

• 2 and 16

• 8 and 12

Which set of numbers can be divided exactly by 3?

• 3, 6, 16

• 9, 12, 22

• 12, 21, 30

• 9, 11, 12

Which set of numbers has the GCF of 6?

• 12, 24, 36

• 4, 12, 24

• 12, 30, 35

• 6, 18, 60

What is the GCF of 35 and 42?

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25

• 1, 2, 25

• 1, 5,  25

• 1, 5

I am the GCF of 8 and 24. What number am I?

• 2

• 4

• 8

• 24