Unit 10 Contents

6. Josh and Sam solved the problem in two different ways. Josh used paper and pencil and wrote the following:

   = =

   Sam reasoned that since of 4 is 2, then of is , or in simplest form. Who is correct? Explain.
1. Estimate the product of and . Is it greater or less than ? Is it greater or less than ?
2. Fold paper, sketch a rectangle, or use fraction circle pieces to solve . Show your work with a drawing of the model you used.
3. Multiply using paper and pencil like Josh did in Question 6.
4. How do your solutions in Question 7B and Question 7C compare?
8. Find the products.
• Estimate the size of the product. You can use fraction circle pieces to help you estimate.
• Choose any strategy to solve the problem and write a number sentence.
• Use paper folding or a rectangle model at least once.
• Use fraction circle pieces at least once.
• Compare your product to your estimate to see if it is reasonable.
1. =
2. =
3. =
4. =
5. =
6. =
7. 3 =
8. =

Check-In: Question 9

1. Estimate the product of and . Will it be more or less than ? Will it more or less than ?
2. Show how to solve using fraction circle pieces, by sketching a rectangle, or by folding paper. Write a number sentence to show your solution.
3. Solve using paper and pencil.
4. Is your answer to Question 6C reasonable? How do you know?