This activity will help you practice adding and subtracting fractions. You will need three drinking glasses, index cards, tape, and a measuring cup. First, take two drinking glasses. Using index cards or tape, label one glass as and the other glass as . Fill the measuring cup to of a cup with water. Now, pour that water into the glass marked . Take the measuring cup and this time fill it only to of a cup. Pour that water into the glass marked .

Now pour both glasses of water into the third glass. How much water do you have? Add plus . Remember to copy the denominator into your answer. You can test to see if your addition is correct. Just pour both glasses of water back into the measuring cup.

Now use these measurements to create new fraction problems:

Ready to move on to the next lesson?
Adding and Subtracting Fractions with Like Denominators Basics