Unit 1 Lesson 7 Add Unlike Fractions

Pizza Party Mr. Waigand bought a pizza for lunch. Mr. Dunn ate of the pizza and Miss Valenti ate of the pizza. How much did Mr. Dunn and Miss Valenti eat altogether? Will there be any left for Mr. Waigand?

Pizza Party Mr. Waigand bought a pizza for lunch. Mr. Dunn ate of the pizza and Miss Valenti ate of the pizza. How much did Mr. Dunn and Miss Valenti eat altogether? Will there be any left for Mr. Waigand? These fractions are hard to add because they have different denominators. If you use fraction bars, you can’t tell where ¼ is on the 1/3 bar.

We can split the fourths and thirds into the same-sized unit fractions. We can split each third into 4 parts. We can also split each forth into 3 parts. That will give us twelfths on both bars.

How many twelfths is one third? How many twelfths is one fourth? What is the total of +

Which common denominator would you use? Does ½ + 1/3 = 2/5

Team Pair Solo

Team Pair Solo