Finding Factor Pairs Using Number Line

What is a factor of a number?

• A number that is always greater than the original number

• A whole number that can be multiplied by another to get the original number

• A number that can be divided by another number

• A number that is always less than the original number

Which of the following is a factor pair of 20?

• 8 and 2

• 5 and 6

• 2 and 10

• 3 and 7

Why is 3 not considered a factor of 20?

• Because 3 is less than 20

• Because 3 cannot be multiplied by any whole number to get 20

• Because 3 is greater than 20

• Because 3 is not a whole number

What is the last factor pair of 20 found using the number line?

• 1 and 20

• 2 and 10

• 4 and 5

• 3 and 6

Which of the following lists all the factors of 20?

• 1, 2, 4, 5, 10

• 1, 2, 4, 5, 10, 20

• 1, 2, 3, 4, 5, 10, 20

• 2, 4, 5, 10, 20