Understanding Factors and Multiples

What is a factor of 12?

• 8

• 1, 2, 3, 4, 6, 12

• 7

• 5

List all the factors of 15.

• 10, 12, 15, 20

• 1, 2, 3, 5

• 2, 4, 6, 8

• [1, 3, 5, 15]

What is the least common multiple (LCM) of 4 and 5?

• 15

• 20

• 25

• 12

How many multiples of 3 are there between 1 and 30?

• 10

• 12

• 15

• 8

Is 18 a multiple of 6?

• Yes

• 6 is not a factor of 18

• 18 is a prime number

• No

What are the first five multiples of 7?

• 5, 10, 15, 20, 25

• [7, 14, 21, 28, 35]

• 6, 12, 18, 24, 30

• 7, 15, 22, 29, 36

Define what a factor is in your own words.

• A factor is a number that is always greater than the number it divides.

• A factor is a number that multiplies another number to get a product.

• A factor is a number that divides another number without leaving a remainder.

• A factor is a number that is added to another number.

If a number is a multiple of 10, what are its last digits?

• 0

• 3

• 5

• 1

What is the greatest common factor (GCF) of 8 and 12?

• 4

• 8

• 6

• 2

How can you determine if a number is a factor of another number?

• A number A is a factor of another number B if A is greater than B.

• A number A is a factor of another number B if B is a multiple of A.

• A number A is a factor of another number B if B divided by A results in an integer.

• A number A is a factor of another number B if A is a prime number.