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Lesson 2 — Activity 3: Composites and Prime Factorizations
Completion requirements
Lesson 2 — Activity 3: Composites and Prime Factorizations
Getting Ready
In the previous two activities, you have practised
finding multiples and factors. Take a moment to think once more what
each of these are.
For the number 6:
The first five multiples of 6 are:
- 6 x 1 = 6
- 6 x 2 = 12
- 6 x 3 = 18
- 6 x 4 = 24
- 6 x 5 = 30
- 6: {6, 12, 18, 24, 30}

Image courtesy of www.imagesgoogle.com
The factors of 6 are:
- 6 ÷ 1 = 6
- 6 ÷ 2 = 3
- 6 ÷ 3 = 2
- 6: {1, 2, 3, 6}
Getting Ready
In the previous two activities, you have practised finding multiples and factors. Take a moment to think once more what each of these are.
For the number 6:
The first five multiples of 6 are:
- 6 x 1 = 6
- 6 x 2 = 12
- 6 x 3 = 18
- 6 x 4 = 24
- 6 x 5 = 30
- 6: {6, 12, 18, 24, 30}

Image courtesy of www.imagesgoogle.com
The factors of 6 are:
- 6 ÷ 1 = 6
- 6 ÷ 2 = 3
- 6 ÷ 3 = 2
- 6: {1, 2, 3, 6}
In this activity, you will learn about the types of numbers.
There are two types of numbers:
Prime numbers:
- A
prime number is a number that can only be divided by itself and 1.
Another way to think of prime numbers is that they only have 2 factors. O
and 1 are not prime numbers.
- The first five prime numbers are 2, 3, 5, 7, and 11.
Composite numbers:
- A composite number is a number that can be divided by more than itself and 1 (meaning they have more than two factors).
- 4 is the first composite number because it can be divided by 1, 2, and 4