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Menu Math: What's for Lunch?

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Lesson Plan

Menu Math: What's for Lunch?

Students will be able to add and subtract prices from a menu to calculate total costs and change, strengthening their practical money management skills.

Understanding menu math helps students develop critical real-world math skills, empowering them to confidently handle money and make informed decisions in everyday situations like ordering food.

Audience

3rd Grade Students

Time

30 minutes

Approach

Students will engage with a fun, fictional menu to practice addition and subtraction problems related to ordering food.

Materials

Whiteboard or Projector, Markers or Pens, Menu Math Slide Deck, Menu Math Worksheet, and Menu Math Worksheet Answer Key

Prep

Preparation

10 minutes

Step 1

Warm-Up: Food for Thought

5 minutes

  1. Begin with the Menu Math Warm-Up to get students thinking about food and prices.
  2. Ask students to share their answers and discuss briefly.

Step 2

Introduction to Menu Math

5 minutes

  1. Use the first few slides of the Menu Math Slide Deck to introduce the concept of menu math.
  2. Explain how to find prices and calculate totals.

Step 3

Guided Practice: Let's Order!

10 minutes

  1. Display the menu from the Menu Math Slide Deck on the board.
  2. Work through a couple of examples together as a class, demonstrating how to add items and calculate change.
  3. Encourage students to participate and ask questions.

Step 4

Independent Practice: Your Turn to Order!

5 minutes

  1. Distribute the Menu Math Worksheet.
  2. Have students work independently to solve the problems.
  3. Circulate around the classroom to provide support and answer questions.

Step 5

Cool-Down: Quick Check-Out

5 minutes

  1. Conclude with the Menu Math Cool-Down.
  2. Collect worksheets to review understanding.
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Slide Deck

Welcome to Menu Math!

Have you ever looked at a menu and wondered how much your meal would cost? Today, we're going to become menu math masters!

Welcome students and introduce the concept of using math in everyday situations like ordering food.

What is Menu Math?

  • Using a menu to find prices.
  • Adding up the cost of different items.
  • Subtracting to find out how much change you get back.
  • It's like being a super shopper (or a super eater!)

Explain what 'menu math' is: using addition and subtraction to figure out prices, total costs, and how much change you'll get back. Emphasize that it's a useful skill for real life.

Our Super Snack Shack Menu!

Main Dishes

  • 🍔 Hamburger: $3.50
  • 🌭 Hot Dog: $2.75
  • 🍗 Chicken Nuggets: $4.00

Sides

  • 🍟 Fries: $1.75
  • 🍎 Apple Slices: $1.25
  • 🧅 Onion Rings: $2.00

Drinks

  • 🧃 Juice Box: $1.00
  • 💧 Water Bottle: $0.75
  • 🥛 Milk: $1.50

Desserts

  • 🍪 Cookie: $0.50
  • 🍦 Ice Cream Cone: $1.00

Display the fictional menu clearly. Give students a moment to look at the different items and their prices. You can ask a few quick questions like, 'What's the price of a hamburger?'

Example 1: What's the total cost?

You order a Hamburger and Fries.

Hamburger: $3.50
Fries: $1.75

What's your total?

$3.50 + $1.75 = ?

Work through this example step-by-step with the class. Show how to add $3.50 and $1.75. Explain how to line up the decimal points. Ask students for the answer.

Example 2: How much change?

You order a Hot Dog and a Juice Box.

Hot Dog: $2.75
Juice Box: $1.00

Your total is $3.75. You pay with $5.00.

How much change do you get back?

$5.00 - $3.75 = ?

Confirm the answer for Example 1. Then, present Example 2. Explain that if you pay with $10, you need to subtract the total cost from $10 to find the change. Walk them through the subtraction.

Time to Practice!

Now you'll get to practice your menu math skills! Remember:

  • Add to find the total cost of your order.
  • Subtract to find your change if you pay with a certain amount.

Good luck, Menu Math Masters!

Reinforce the key idea of adding for total and subtracting for change. Encourage students that they're ready to try it on their own with the worksheet.

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Warm Up

Menu Math Warm-Up: Food for Thought

Imagine you're at a restaurant with your family. What are two things you might order? How much do you think they would cost together?

Item 1:


Item 2:


Estimated Total Cost:


Why do you think it's important to know how to add up prices when you buy things?











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Worksheet

Menu Math Worksheet: Super Snack Shack Orders!

Use the Super Snack Shack Picture Menu to answer the questions below. Remember to show your work!

Super Snack Shack Picture Menu

Main Dishes

  • 🍔 Hamburger: $3.50
  • 🌭 Hot Dog: $2.75
  • 🍗 Chicken Nuggets: $4.00

Sides

  • 🍟 Fries: $1.75
  • 🍎 Apple Slices: $1.25
  • 🧅 Onion Rings: $2.00

Drinks

  • 🧃 Juice Box: $1.00
  • 💧 Water Bottle: $0.75
  • 🥛 Milk: $1.50

Desserts

  • 🍪 Cookie: $0.50
  • 🍦 Ice Cream Cone: $1.00

1. You want a Hot Dog and some Fries.
What is your total cost?

Show your work:


Total Cost:


2. Your friend orders Chicken Nuggets and a Juice Box.
What is their total cost?

Show your work:


Total Cost:


3. You have $5.00. You buy a Hamburger.
How much change do you get back?

Show your work:


Change:


4. Your teacher wants an Ice Cream Cone and a Water Bottle.
What is the total cost? If they pay with $3.00, how much change will they get?

Show your work:


Total Cost:



Change:


5. Challenge Question!
You have $6.00. What two different items could you buy that would cost exactly $4.50?

Item 1:


Item 2:


Show your work:


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Answer Key

Menu Math Worksheet Answer Key

Super Snack Shack Picture Menu

Main Dishes

  • 🍔 Hamburger: $3.50
  • 🌭 Hot Dog: $2.75
  • 🍗 Chicken Nuggets: $4.00

Sides

  • 🍟 Fries: $1.75
  • 🍎 Apple Slices: $1.25
  • 🧅 Onion Rings: $2.00

Drinks

  • 🧃 Juice Box: $1.00
  • 💧 Water Bottle: $0.75
  • 🥛 Milk: $1.50

Desserts

  • 🍪 Cookie: $0.50
  • 🍦 Ice Cream Cone: $1.00

1. You want a Hot Dog and some Fries.
What is your total cost?

Show your work:
$2.75 (🌭 Hot Dog)

  • $1.75 (🍟 Fries)

$4.50

Total Cost: $4.50

2. Your friend orders Chicken Nuggets and a Juice Box.
What is their total cost?

Show your work:
$4.00 (🍗 Chicken Nuggets)

  • $1.00 (🧃 Juice Box)

$5.00

Total Cost: $5.00

3. You have $5.00. You buy a Hamburger.
How much change do you get back?

Show your work:
$5.00 (Paid)

  • $3.50 (🍔 Hamburger)

$1.50

Change: $1.50

4. Your teacher wants an Ice Cream Cone and a Water Bottle.
What is the total cost? If they pay with $3.00, how much change will they get?

Show your work:
First, find the total cost:
$1.00 (🍦 Ice Cream Cone)

  • $0.75 (💧 Water Bottle)

$1.75 (Total Cost)

Next, find the change:
$3.00 (Paid)

  • $1.75 (Total Cost)

$1.25 (Change)

Total Cost: $1.75
Change: $1.25

5. Challenge Question!
You have $6.00. What two different items could you buy that would cost exactly $4.50?

Possible Solution:
Item 1: 🍔 Hamburger ($3.50)
Item 2: 🧃 Juice Box ($1.00)
Total: $3.50 + $1.00 = $4.50

Item 1: Hamburger
Item 2: Juice Box

Show your work:
$3.50 (🍔 Hamburger)

  • $1.00 (🧃 Juice Box)

$4.50

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Cool Down

Menu Math Cool-Down: Quick Check-Out

  1. What was one new thing you learned or practiced today about menu math?






  2. When might you use menu math in your real life?






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