Fractions
What is the top of a fraction called?
Numerator
What is the LCM of 4 and 2?
4
2, 4
LCM= 4
5/6 + 3/6=
8/6 Improper
3/4 - 1/2=
What is the bottom of a fraction called?
Denominator
What is the LCM of 2 and 6?
2, 4, 6
6
LCM= 6
5 1/4 + 2 2/4=
7 3/4
7 4/5 - 2 1/10=
5 7/10
What is the first step when adding or subtracting fractions?
Look at the denominators
What is the LCM of 4 and 12?
4, 8, 12
12
LCM= 12
4 1/5 + 2 2/10=
6 4/10
10 8/9 - 10 3/9=
5/9
If the denominators are different, what's the next step?
Find the LCM
What is the LCM of 18 and 6?
18
6, 12, 18
LCM= 18
15 3/6 + 3 3/6=
18 6/6= 19
11 2/12 - 5 2/12=
6
After you find the LCM, what's the next step?
Now we find equivalent fractions
What is the LCM of 4 and 9?
4, 8, 12, 16, 20, 24, 28, 32, 36
9, 18, 27, 36
LCM= 36
20 1/7 + 13 4/10=
33 38/70
8 1/8 - 3 3/4=
Stop- Needs Regrouping
LCM= 8