Prime or Composite
What is a Prime number?
Any number that has ONLY 2 factors, 1 and itself.
List the first four multiples of 6.
What is an Improper Fraction?
Any fraction with a numerator larger than the denominator.
The fractions must be ________ fractions in order to add or subtract them.
Like Fractions
Write 9/4 as a mixed number.
2 1/4
5 x 1/4 =
1 1/4
What is a composite number?
Any number with more than 2 factors.
List all the factors of 12.
1, 2, 3, 4, 6, 12.
What do we call the following fractions?
1/12, 1/5, 1/2
Unit Fractions
5/8 + 5/8 =
1 1/4
Convert 2 1/4 into an improper fraction.
9/4
2 x 3/8 =
3/4
Is 15 Prime or Composite?
Composite
List all the factors of 18.
1, 2, 3, 6, 9, 18
Give an example of two equivalent fractions.
...
6/7 + 3/7 + 5/7 =
2
2 3/4 + 1 3/4 =
4 1/2
4 x 3/4 =
3
What is the only EVEN Prime number?
Is 5 a multiple of 20?
No. 20 is a multiple of 5.
What is the Greatest Common Factor?
The largest number that divides into both the numerator and the denominator evenly.
4/5 + 4/5 =
1 3/5
Write 33/15 as a mixed number in simplest form.
2 1/5
Write a repeated addition sentence for: 3 x 3/8 and solve.
3/8 + 3/8 + 3/8 = 9/8 = 1 1/8
Is the number 1 Prime or Composite?
Neither
List all the factors of 27.
1, 3, 9, 27.
When do you need to find the Greatest Common Factor?
When simplifying fractions.
7/5 + 9/5 =
3 1/5
3 1/5 - 1 4/5 =
1 2/5
4 x 3/24 =
1/2