Complete Guide to Money Word Problems in Grade 3 Mathematics

Master money word problems: addition, subtraction, making change, budgeting, and real-world financial literacy exercises.

Money Word Problems Overview
Core Concepts and Definitions

Money: Currency used for buying goods and services. In US, we use dollars ($).

Dollar ($): Main unit of money, where $1 = 100 cents.

Cents (¢): Smaller unit of money, where 100¢ = $1.

Coin Values: Penny = 1¢, Nickel = 5¢, Dime = 10¢, Quarter = 25¢.

Bill Values: $1, $5, $10, $20, $50, $100 bills.

Financial Literacy: Understanding how to manage money wisely.

$1 = 100¢
Dollar to Cent Relationship
Penny
1¢
One cent
Nickel
5¢
Five cents
Dime
10¢
Ten cents
Quarter
25¢
Twenty-five cents
Addition
Finding total cost
Subtraction
Making change
Multiplication
Multiple items
Division
Sharing costs
Step-by-Step Methodology:
  1. Read the problem: Understand what's being asked
  2. Identify amounts: Find all dollar and cent values
  3. Choose operation: Addition, subtraction, multiplication, or division
  4. Solve: Calculate the answer
  5. Check: Make sure your answer makes sense
Tip 1: Always write the dollar sign ($) or cent symbol (¢).
Tip 2: Convert cents to dollars: 100¢ = $1.00.
Tip 3: Use a number line for adding/subtracting money.
Tip 4: Estimate first to check if your answer is reasonable.
Financial Literacy:

• Budgeting: Planning how to spend money

• Saving: Keeping money for future purchases

• Spending: Using money to buy things

• Making change: Getting back extra money

• Comparison shopping: Finding the best deals

Money Word Problems: Exercises 1 to 3
1 Addition Problem
Problem:
Sarah bought a toy for $3.45 and a book for $2.75. How much did she spend altogether?
Key Concepts:

Addition: To find the total cost, add all individual prices together.

Your Work Space:

Toy: $3.45

Book: $2.75

Total: $3.45 + $2.75 = $______

Solution Steps:
  1. Line up the decimal points
  2. Add the cents: 45¢ + 75¢ = 120¢ = $1.20
  3. Add the dollars: $3 + $2 = $5
  4. Combine: $5 + $1.20 = $6.20
Toy
$3.45
Book
$2.75
Total
$6.20
Step 1: Align decimal points

$3.45

+$2.75

Step 2: Add cents column

45¢ + 75¢ = 120¢ = $1.20

Step 3: Add dollar column

$3 + $2 = $5

Step 4: Combine results

$5 + $1.20 = $6.20

Total spent = $6.20
Final Answer:

Sarah spent $6.20 altogether.

Applied Rules:

• Align decimal points when adding money

• 100 cents = 1 dollar

• Add cents first, then dollars

2 Subtraction Problem
Problem:
Tom had $10.00 and bought a snack for $3.65. How much change did he receive?
Key Concepts:

Subtraction: To find change, subtract the cost from the amount paid.

Your Work Space:

Amount paid: $10.00

Cost: $3.65

Change: $10.00 - $3.65 = $______

Paid
$10.00
Spent
$3.65
Change
$6.35
Step 1: Align decimal points

$10.00

-$3.65

Step 2: Subtract cents

0¢ - 65¢ = Need to borrow: 100¢ - 65¢ = 35¢

Step 3: Subtract dollars

$9 - $3 = $6

Step 4: Combine results

$6 + 35¢ = $6.35

Change received = $6.35
Final Answer:

Tom received $6.35 in change.

Applied Rules:

• Align decimal points when subtracting money

• Borrow from dollars when subtracting cents

• Change = Amount paid - Cost

3 Multiplication Problem
Problem:
Tickets cost $4.50 each. If Emma buys 3 tickets, how much will she spend?
Key Concepts:

Multiplication: When buying multiple items of the same price, multiply the cost by the number of items.

Your Work Space:

Price per ticket: $4.50

Number of tickets: 3

Total cost: $4.50 × 3 = $______

Per ticket
$4.50
Number
3
Total
$13.50
Step 1: Multiply the dollars

$4 × 3 = $12

Step 2: Multiply the cents

50¢ × 3 = 150¢ = $1.50

Step 3: Combine results

$12 + $1.50 = $13.50

Step 4: Verify calculation

$4.50 + $4.50 + $4.50 = $13.50 ✓

Total cost = $13.50
Final Answer:

Emma will spend $13.50 for 3 tickets.

Applied Rules:

• Multiply the price by the number of items

• 100 cents = 1 dollar

• Always check your answer by adding

Money Word Problems: Exercises 4 to 5
4 Budgeting Problem
Problem:
Maya has $20.00. She wants to buy a game for $12.75 and candy for $3.50. Does she have enough money? How much will she have left?
Key Concepts:

Budgeting: Planning expenses within available funds. Add all expenses and compare to available money.

Your Work Space:

Available money: $20.00

Game: $12.75

Candy: $3.50

Total expenses: $12.75 + $3.50 = $______

Leftover: $20.00 - $______ = $______

Available
$20.00
Expenses
$16.25
Leftover
$3.75
Step 1: Calculate total expenses

$12.75 + $3.50 = $16.25

Step 2: Compare to available money

$16.25 < $20.00, so yes, she has enough

Step 3: Calculate leftover money

$20.00 - $16.25 = $3.75

Step 4: Verify calculation

$16.25 + $3.75 = $20.00 ✓

Has enough: Yes, Leftover: $3.75
Final Answer:

Yes, Maya has enough money. She will have $3.75 left over.

Applied Rules:

• Add all expenses first

• Compare total expenses to available money

• Subtract expenses from available money to find leftover

5 Comparison Shopping
Problem:
Store A sells juice for $2.50 per bottle. Store B sells the same juice for $1.95 per bottle. If you buy 5 bottles, how much would you save by shopping at Store B?
Key Concepts:

Comparison Shopping: Finding the best deal by comparing prices. Calculate total cost at each store and find the difference.

Your Work Space:

Store A: $2.50 × 5 = $______

Store B: $1.95 × 5 = $______

Savings: $______ - $______ = $______

Store A
$12.50
Store B
$9.75
Savings
$2.75
Step 1: Calculate cost at Store A

$2.50 × 5 = $12.50

Step 2: Calculate cost at Store B

$1.95 × 5 = $9.75

Step 3: Find the difference

$12.50 - $9.75 = $2.75

Step 4: Verify calculation

$9.75 + $2.75 = $12.50 ✓

Savings = $2.75
Final Answer:

You would save $2.75 by shopping at Store B.

Applied Rules:

• Calculate total cost for each option

• Subtract the lower cost from the higher cost to find savings

• Comparison shopping helps save money

Questions & Answers

Question: I don't understand how to add money with decimals. Can you explain it better?

Answer: Adding money with decimals is like regular addition, but you must line up the decimal points. Think of it like this:

If you have $3.45 and $2.75, line up the decimal points:
$3.45
+$2.75
_____

Add the cents first: 45¢ + 75¢ = 120¢ = $1.20
Then add the dollars: $3 + $2 + $1 (from the cents) = $6
So the total is $6.20

Always remember to put the dollar sign in your answer!

Question: How can I help my child practice money word problems at home?

Answer: Here are some effective ways to practice money word problems:

  • Use real coins and bills for hands-on practice
  • Create shopping scenarios with actual prices
  • Practice making change during real purchases
  • Use online money games and apps
  • Create story problems based on your child's interests

Make it fun and relevant to everyday life!

Question: How do I know when to add, subtract, multiply, or divide in money word problems?

Answer: Look for clue words in the problem:

  • Addition: "total", "altogether", "in all", "sum", "combined"
  • Subtraction: "change", "left over", "difference", "more than", "less than"
  • Multiplication: "each", "times", "product", "multiple items"
  • Division: "shared equally", "per person", "split", "average"

Read the problem carefully and ask yourself: "What am I trying to find?"