Remind students that fractions with common denominators have denominators that are the same. You can add the numerators when the denominators are the same. Using the image, show how to add to a fraction greater than 1. There is 1
of a cake. Another
are added. If you add the fractions together, you get 1
of cake. Since this is a fraction greater than 1 you can convert it into a mixed number so your total becomes 2
. Ask students to solve a few problems with visual support. Then explain to students that solving these addition problems without visual support is exactly the same. You add the fractions with common denominators by adding the numerators. Then see if you have a fraction greater than 1 that you can convert into a mixed number. Practice a few of these exercises as a class. Finally explain to students how to solve fraction story problems. They must first determine the fractions from the word problem and then solve for the answer. Do one as a class and then ask students to solve on their own.
Check that students understand converting fractions greater than 1 to mixed numbers after adding by asking the following question:
- What do you do if you want to add fractions with a common denominator?