Factors, Multiples & Geometry Review

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

When we skip count, we are listing .....

• factors
• divisors 
• addition 
• multiples

A prime number

• has one factor
• has more than 2 factors
• has 100 factors
• has exactly 2 factors: 1 and the number

A composite number

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

Select all the numbers that are factors of 20.

• 10

• 4

• 8

• 2

• 1

Which number below is a multiple of 3, 4, and 5?

• 45

• 48

• 50

• 60

Which numbers are multiples of 4? You can select more than one answer.

• 24

• 38

• 44

• 12

Which number below is not a factor

of 50?

• 2

• 4

• 5

• 10

The factor pairs of 15  are 1 and 15 and _______

• 2 and 7
• 3 and 6
• 3 and 5
• 3 and 4

Is 5 prime or composite?

• prime, because it has one factor

• prime, because it has two factors

• composite, because it has three factors

• neither