Factors and Multiples Page 2 of 3
Finding Factors Examples
Did you try to find all the factors of 20? Let's start with 1. Remember, if you start with 1 and work your way up, you won't miss any factors.
Is 1 a factor of 20?
Yes, 1 times 20 is 20 so 1 and 20 are both factors.
Is 2 a factor?
Yes, 2 times 10 is 20 so 2 and 10 are both factors.
Is 3 a factor?
No, there isn't a whole number that can be multiplied by 3 to equal 20.
Is 4 a factor?
Yes, 4 times 5 is 20 so 4 and 5 are both factors. Next, we get to 5 but we've already found that as a factor so we can stop here. Now we can list all the factors in order from smallest to largest.
Is 1 a factor of 20?
Yes, 1 times 20 is 20 so 1 and 20 are both factors.
Is 2 a factor?
Yes, 2 times 10 is 20 so 2 and 10 are both factors.
Is 3 a factor?
No, there isn't a whole number that can be multiplied by 3 to equal 20.
Is 4 a factor?
Yes, 4 times 5 is 20 so 4 and 5 are both factors. Next, we get to 5 but we've already found that as a factor so we can stop here. Now we can list all the factors in order from smallest to largest.
What is a Multiple?
Remember when you learned how to skip count? You probably remember counting by twos like this: 2, 4, 6, 8, 10, 12 . . . . Those numbers that I just listed? They're all multiples of 2. When you multiply 2 by a whole number, the product you get is called a multiple of 2. They go on forever so we can't possibly list them all. Usually, we just list the first few and then put dots at the end to show that there are an infinite number of them.
Or let's say you're counting by fives: 5, 10, 15, 20, 25, 30 . . . . These numbers are all multiples of 5. When you multiply 5 by a whole number, you get a multiple of 5.
How Do You Find Multiples of a Number?
See if you can find the first four multiples of 6. When you think you have them, click Next to see if your answer is correct.
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