Prime Or Composite Numbers Chart Template Page 27
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Date
FACTORS AND MULTIPLES
The numbers that are multiplied to
give the product of a number are
Example: 1 x 18 = 18, 2 x 9 = 18, 3 x 6 = 18
called factors.
The factors of 18 are 1, 2, 3, 6, 9, and 18.
The factors of a number also evenly
18 is a composite number since
divide the number.
it has more than two factors.
18 is a multiple of 2 and 9. It is also a multiple of 3 and 6.
A number with more than two factors
If you can divide a number evenly by 2, the number is even.
is a composite number.
If the remainder is 1 when you divide by 2,
The product of a whole number and
the number is odd.
any other whole number is a
Examples: 18 ÷ 2 = 9, so 18 is even.
multiple of the whole numbers.
19 ÷ 2 = 9 R1, so 19 is odd.
List all the factors of each number.
Is the number odd or even?
[1, 2, 4, 8, 16]
[1, 3, 5, 15]
1. 16
2. 15
Odd or Even?
Odd or Even?
[even]
[odd]
[1, 2, 3, 4, 6, 12]
[1, 2, 3, 5, 6, 10, 15, 30]
3. 12
4. 30
Odd or Even?
Odd or Even?
[even]
[even]
[1, 5, 7, 35]
[1, 3, 5, 9, 15, 45]
5. 35
6. 45
Odd or Even?
Odd or Even?
[odd]
[odd]
Write a multiple of each pair of numbers.
[Possible answers are given.]
7. 3 and 5
8. 4 and 6
[15]
[12]
9. 3 and 10
10. 5 and 9
[30]
[45]
CHALLENGE
What factors do 18 and 42 have in common?
[2, 3, 6]
What is the least common multiple of 6 and 8
(the least number that is a multiple of both numbers)?
[24]
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