The first thing you do when adding or subtracting fractions
What is find the least common denominator?
1/4 + 2/4
What is 3/4
2/4 - 1/4
What is 1/4
4/8
1/2
How you find the least common denominator
What is name the multiples
1/2 + 1/8
What is 5/8
4/8 - 1/4
What is 1/4
4/6
2/3
What you do after finding the least common denominator
What is change the fraction to have the least common denominator
2/6 + 4/9
What is 7/9
5/9 - 2/5
What is 7/45
4/20
1/5
What you do after changing the fraction to have the least common denominator
What is add the fractions
4/5 + 6/8
What is 1 11/20
1/2 - 12/25
What is 13/50
2/16
1/8
What you do after adding the fractions
What is simplify if possible
4/12 + 4/16
What is 7/12
4/12 - 4/14
What is 1/21
12/36
1/3