Complete all problems at 3rd grade level. Show your work for full credit. Circle your final answer.
1. You buy a toy that costs $2.47. You give the cashier $5.00. How much change should you get back? Express your answer in dollars and cents.
Show your work:
Amount given: _________
Cost of item: _________
Calculation: ___________
Answer: _____________
Amount given: $5.00
Cost of item: $2.47
Calculation: $5.00 - $2.47 = $2.53
Answer: You should get back $2.53 in change.
Complex Change: Making change with amounts that require borrowing across decimal places
Change = Amount Paid - Cost of Item (line up decimals)
2. You buy a book for $3.25 and a pencil for $1.15. Sales tax is $0.40. You give the cashier $10.00. How much change should you get back?
Show your work:
Cost of book: _________
Cost of pencil: _________
Sales tax: _________
Total cost: ___________
Amount given: _________
Calculation: ___________
Answer: _____________
Cost of book: $3.25
Cost of pencil: $1.15
Sales tax: $0.40
Total cost: $3.25 + $1.15 + $0.40 = $4.80
Amount given: $10.00
Calculation: $10.00 - $4.80 = $5.20
Answer: You should get back $5.20 in change.
Total Cost with Tax: Sum of all items plus sales tax
• Add up all item costs to find subtotal
• Add tax to subtotal to get total cost
• Then subtract total from amount given
3. Show four different ways to make $1.25 using dollar bills, quarters, dimes, and nickels. Include at least one way that uses dollar bills.
Way 1: _________ dollar bills, _________ quarters, _________ dimes, _________ nickels
Way 2: _________ dollar bills, _________ quarters, _________ dimes, _________ nickels
Way 3: _________ dollar bills, _________ quarters, _________ dimes, _________ nickels
Way 4: _________ dollar bills, _________ quarters, _________ dimes, _________ nickels
Bonus: Which way uses the fewest coins?
Way 1: 1 dollar bill, 1 quarter, 0 dimes, 0 nickels ($1.00 + $0.25 = $1.25)
Way 2: 0 dollar bills, 5 quarters, 0 dimes, 0 nickels (5 × $0.25 = $1.25)
Way 3: 0 dollar bills, 4 quarters, 2 dimes, 1 nickel ($1.00 + $0.20 + $0.05 = $1.25)
Way 4: 0 dollar bills, 3 quarters, 5 dimes, 0 nickels ($0.75 + $0.50 = $1.25)
Bonus: Way 1 uses the fewest coins (2 total: 1 dollar bill + 1 quarter)
Advanced Coin Combinations: Different sets of bills and coins that add up to the same amount
Same amount can be made with different bill and coin combinations
4. Sarah has $15.00. She buys a backpack for $7.85 and lunch for $3.25. Then she spends $2.50 on a snack. How much money does she have left?
Show your work:
Sarah's money: _________
Backpack cost: _________
Lunch cost: _________
Snack cost: _________
Total spent: ___________
Calculation: ___________
Answer: _____________
Sarah's money: $15.00
Backpack cost: $7.85
Lunch cost: $3.25
Snack cost: $2.50
Total spent: $7.85 + $3.25 + $2.50 = $13.60
Calculation: $15.00 - $13.60 = $1.40
Answer: Sarah has $1.40 left.
Multi-Step Problems: Problems that require multiple calculations to solve
Solve step by step, keeping track of each calculation
5. Tom has 8 quarters, 6 dimes, 12 nickels, and 23 pennies. He wants to buy a game that costs $4.95. Does he have enough money? If yes, how much change will he get?
Show your work:
Quarters value: _________
Dimes value: _________
Nickels value: _________
Pennies value: _________
Total money: ___________
Cost of game: _________
Answer: _____________
Quarters value: 8 × $0.25 = $2.00
Dimes value: 6 × $0.10 = $0.60
Nickels value: 12 × $0.05 = $0.60
Pennies value: 23 × $0.01 = $0.23
Total money: $2.00 + $0.60 + $0.60 + $0.23 = $3.43
Cost of game: $4.95
Answer: No, he does not have enough money. He needs $4.95 - $3.43 = $1.52 more.
Advanced Currency Conversion: Calculate total value of multiple coin types
Calculate value of each coin type separately, then add together
6. A customer pays $20.00 for an item that costs $13.67. What is the most efficient way to give the change using the fewest coins possible? Include dollar bills and coins.
Show your work:
Calculation: ___________
Most efficient way: ___________
Answer: _____________
Calculation: $20.00 - $13.67 = $6.33
Most efficient way: 6 dollar bills + 1 quarter + 1 nickel + 3 pennies = $6.00 + $0.25 + $0.05 + $0.03 = $6.33
Answer: The most efficient way is 6 dollar bills + 1 quarter + 1 nickel + 3 pennies (11 total bills and coins).
Complex Efficiency: Using the fewest bills and coins possible to make change
Always start with the largest denomination first
7. Scenario A: Buy a pen for $1.95 with $5.00. Scenario B: Buy a notebook for $3.25 with $10.00. Scenario C: Buy a calculator for $7.80 with $20.00. Which scenario gives the most change? How much more than the others?
Show your work:
Scenario A calculation: ___________
Scenario B calculation: ___________
Scenario C calculation: ___________
Comparison: ___________
Answer: _____________
Scenario A: $5.00 - $1.95 = $3.05
Scenario B: $10.00 - $3.25 = $6.75
Scenario C: $20.00 - $7.80 = $12.20
Comparison: Scenario C gives the most change. It gives $12.20 - $6.75 = $5.45 more than Scenario B and $12.20 - $3.05 = $9.15 more than Scenario A.
Answer: Scenario C gives the most change at $12.20.
Advanced Comparison: Calculating and comparing different change amounts
Calculate each scenario separately, then compare the results