Factors, Prime Factors and Highest Common Factor (HCF)

Front

What are all the FACTORS of 24?

Back

1, 2, 3, 4, 6, 8, 12, 24

Front

List the first four multiples of 8.

Back

8, 16, 24, 32

Front

17 is a PRIME NUMBER because it has just ___ factors: ___ and ___.

Back

two, itself, 1

Front

What is a factor?

Back

a number that can be divided by another number without a remainder.

Front

Which of these statements is true?

• All numbers have 4 factors.
• 2 is a factor of every number.
• 1 is a factor of every number.
• All odd numbers have an odd number of factors.

Back

1 is a factor of every number.

Front

1, 2, 8, and 16 are all factors of 16. Which factor is missing?

Back

4

Front

1,2,3,6,9 and 18 are the factors of

Back

18

Front

What numbers are the factors of 9?

Back

1, 3, 9

Front

What are the factors of 25?

Back

1, 5, 25