Yellow
Green
Blue
Red
Magenta
Remove
LESSON 9 Estimate Fraction Sums
Estimate Fraction Sums with Circle Pieces
Mr. Moreno's class has 
of a pizza left in one box and 
of a pizza left in a second box.
- Mr. Moreno suggested that Kathy take home the leftover pizza. As she packed up the pizza, she wondered whether it would all fit in one box.
- If the pieces are combined, will they make more or less than one pizza?
- Use fraction circle pieces to model the problem. Is + more than 1 or less than 1? Explain your reasoning.
- Kathy and Romesh each received a large chocolate chip cookie. Each cookie was as large as a cake. Kathy gave her friend Irma
of her cookie. Later, Romesh gave Irma 
of his cookie. - Did Irma receive more or less than cookie altogether? How did you decide?
- Use fraction circle pieces to model + . Is + more or less than ?
