Common
Denominators
Denominators
True or False- The Least common factor is the smallest factor that can fit into both fractions
What is True?
This is what fractions must have in order to add or subtract them.
What is a common denominator?
This is the first step to simplifying a fraction.
What is find the LCF of the numerator and denominator?
3/24
1/8
What is the factored out form of
84/21?
3 x 2 x 2 x 7 / 3 x 7
The LCF of 4 and 8 is this.
What is 2?
The best common denominator for 2/4 and 1/2 would be this.
What is 8?
This is the second step to simplifying a fraction.
Factor out the numerator and denominator
16/48
1/3
Simplify.
84/21
4/1
The LCF of 6/12 is 2/4.
What is false?
The best common denominator for 5/6 and 3/5 would be this.
What is 30?
Simplify 8/24.
What is 1/3?
57/9
19/3
Factor out
77/21
7 x 11 / 7 x 3
The Least Common Factor of 15 and 10 is what?
What is 5?
In order to be able to add, rename these fractions:
9/10+5/6
What is 54/60 + 50/60?
Simplify 15/36.
What is 5/12?
93/18
31/6
Simplify.
77/21
11/3
The Least Common Factor of 7 and 6 is this.
What is 1?
In order to be able to subtract, rename these fractions:
2/3 - 2/6
What is 12/18 - 6/18?
Simplify 17/21.
What is 17/21?
120/18
20/3
What is the what is the factor out form of
51/34 ?
Then, simplify.
3 x 17/ 2 x 17
Then 3/2