Grade 2/Counting Money
Money Change Problems (688)
Students solve word problems involving making change and finding how much money is left after a purchase. Real-world scenarios include buying items and receiving change, calculating remaining money from allowance, and determining savings after spending. These subtraction problems build understanding of practical money transactions and strengthen subtraction skills with dollars and cents.
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Teaching Notes
Teach "counting up" strategy for making change (easier than subtraction for many students). Example: Item costs $3.25, paid $5.00 → count up from $3.25: 75¢ to $4.00, then $1.00 to $5.00 = $1.75 change. Practice with play money and role-playing cashier scenarios.
Vocabulary
Subtract: Take away one amount from another.
Change: Money returned after payment.
Common Mistakes
- Subtracting smaller from larger regardless of context
- Decimal alignment errors
- Not understanding "change" means subtraction
- Not aligning decimals
- Incorrect borrowing/regrouping
- Forgetting dollar/cent symbols
- Miscalculating remaining amount
Differentiation
SupportUse play money; simplify amounts to whole dollars.
ChallengeIntroduce two-step problems or multiple items for purchase.
Discussion Questions
- What does "change" mean in a shopping situation?
- Why is it important to count change you receive?
- Which is easier: subtracting or counting up? Why?
- Why is making change an important skill?
- How can you check if your change is correct?
- When do you use money subtraction in daily life?
- What if you don't have enough money?
Extension Activities
- Store role-play: Students take turns being cashier and customer
- Change challenge: Given price and amount paid, race to calculate change
- Real shopping: At home, help with real transactions and verify change
Parent Tip
Ask your child to calculate change for a pretend purchase.
Learning Path
Skill Cluster
Financial Literacy & Number Operations
Estimated Time
20 minutes
Skills Practiced
Making changeMoney subtractionFinding remaining amount
Prerequisites
- Subtracting within 20
- Counting money
- Adding money problems
- Counting Money
- Basic Subtraction within 1000
- Place Value (decimals)
Next Steps
- Multi-Step Money Problems
- Budgeting Basics
- Decimal Operations
- Adding Money
- Counting Money
- Word Problems: Financial Decisions