1. Let’s Review - Addition
Solve the following addition problems in your spiral notebook using: a place value drawing, the subtotals method and the standard algorithm.
,277

2. Let’s Review – Subtraction
Solve the following subtraction problems in your spiral notebook using a place value drawing and the standard algorithm.
,300

3. Part – Part – Whole Problems
Discuss the problem below with a partner or small group. Identify what information is unknown in the word problem then use a model to solve. Be prepared to share!
Janelle had 16 red beads on a string. She puts 10 blue beads on the string. How many beads are on the string now?

4. Part – Part – Whole Problems
Janelle had 16 red beads on a string. She puts 10 blue beads on the string. How many beads are on the string now?
Part
Whole

5. Part – Part – Whole Problem Models
Part – Part – Whole (Whole Unknown)
Part – Part – Whole (Part Unknown)
Part ? ?
Part
Whole
Part ?
Whole

6. Part – Part – Whole Problems
Discuss the problem below with a partner or small group. Identify what information is unknown in the word problem then use a model to solve. Be prepared to share!
There were 48 fourth graders and parents at a party, 31 of them were children. How many were adults?
What type of Part – Part – Whole problem is this?

7. Relate to Inverse Operations
There were 28 boys and 25 girls at a party. How many children were at the party?
What operation will you use to solve? ________
Equation:
There were 53 children at a party, 28 of them were boys. How many girls were at the party?
Can you use another operation to solve?

8. Part – Part – Whole and Inverse Operations
How does understanding inverse operations help you solve part – part – whole problems?

9. Part – Part – Whole Practice
Work with a partner to complete the worksheet for practice.

10. Part – Part – Whole Challenge
Together two DVD’s cost $32. One DVD cost $4 more than the other. How much did each DVD cost?