factors

Check all the correct answers.

Which of the following numbers have 2 as a factor?

• 8

• 10

• 15

• 24

Check all the correct answers.

Which of the following numbers have 5 as a factor?

• 15

• 20

• 25

• 32

Is 3 a factor of 21?

• yes

• no

Is 5 a common factor of 75 and 80?

• yes

• no

Find the missing factor.

28 = 7 x __

Find the missing factor.

40 = 5 x __

Find the missing factor.

72 = 8 x __

Which lists all the factors of 64?

• 1, 64

• 1, 2, 3, 4, 5, 6, 7, 8

• 1, 2, 32, 64

• 1, 2, 4, 8, 16, 32, 64

What is a factor?

• a factor is when you divide two numbers to get another number
• a whole number that multiplies with another factor to get the whole number product
• a factor the answer to a multiplication problem
• the same as a multiple

A composite number

• has more than 2 factors
• has one factor
• has at least 10 factors
• is always a really big number