Adding Fractions
7/22 + 4/22 =
11/22 or 1/2
1/3 - 1/4
What is 1/12
What is the LCD of 16 and 8?
What is 48
Before we can add or subtract fractions, we must have a common...
What is denominator
4/8 + 2/3
What is 1 1/6
2/3 -1/4
What is 5/12
1/4= x/12 what is x?
What is 3
Find the LCD for 1/4 and 1/6
12
When finding the LCD, you list the ______ of each number and find the first one they have in common.
Multiples
2/10 + 3/10
What is 1/2
6 3/4 - 1 5/8
What is 5 1/8
2/5=x/10
What is 4
What is the LCD for 7/9 and 5/6?
What is 18?
When we do s peanut what are we trying to find?
Equivalent fractions
1 2/3 + 2 3/4
What is 4 5/12
5/10 - 2/12
What is 1/3?
Draw 1/4 and 1/2. Are these equivalent fractions? how do you know?
Yes they are equivalent because the shaded area of each fraction is the same.
What is the LCD for 3/4 and 3/5?
20
What is LCD?
Least Common Denominator - used to help solve fractions
1 3/5 + 4 5/7
What is 6 11/35
7/8 - 1/2
What is 3/8
Draw 2/3 and 4/6. Are these equivalent fractions and how do you know?
Yes they are equivalent because the shaded area of each fraction is the same.
What is the LCD for 5/27 and 7/81?
What is 81?
Write the least common multiple for the numbers: 20 and 15
60