Add & Subtract with Unlike Denominators
What is the first step to add 1/4 and 1/2?
Find a common denominator.
What is 2 1/4 + 1 1/2?
3 3/4
Sarah has 1/4. She eats 1/8. How much pizza is left?
3/8 of the pizza
What is the least common denominator (LCD) of 1/3 and 1/6?
6
What is 3/8 + 5/4?
19/8 or 2 3/8
Add 3 2/5 + 1 1/10.
4 3/10
Jake ran 3/4. If he runs 1/2 more mile, how far has he run in total?
1 1/4 miles
Write 1/4 as an equivalent fraction with a denominator of 12.
3/12
Simplify the sum of 2/5 + 3/10.
7/10
Subtract 5 1/3 - 2 2/9.
2 7/9
Mia has 5/6 of a bag of candy. She gives 1/3 of the bag to her friend. How much candy does she have left?
1/2 of the bag of candy
What is the common denominator of 5/8 and 7/4?
8
What is the result of 7/12 - 5/6?
-1/12
What is the sum of 4 3/8 + 2 5/6?
7 7/24
A recipe calls for 2/3 of a cup of flour, but she only has 1/4 of a cup. How much more flour does she need?
5/12 of a cup
Convert 2/5 and 3/7 to equivalent fractions with a denominator of 35.
14/35 and 15/35
Subtract 3/7 - 5/14.
1/14
Subtract 6 5/12 - 4 7/8.
1 7/24
If a tank is 7/10 full of water and you add 3/5, how full is the tank now?
19/20 full
What is the least common denominator of 3/10, 5/6, and 2/15?
30