Muffin Shop Math: Adding Two-Digit Numbers with Coins!

Math Grades 1st Grade 6:21 Video
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Lesson Description

Let's go shopping at the Muffin Shop! Learn how to add two-digit numbers using dimes and pennies to find the total cost of yummy treats.

Video Resource

Grade 1:Math Lesson # 75 CANADIAN Adding Two-Digit Numbers Using Dimes And Pennies

The Eagle's Nest - Our Online Classroom

Duration: 6:21
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Key Concepts

  • Place Value (Tens and Ones)
  • Adding Two-Digit Numbers
  • Canadian Currency (Dimes and Pennies)

Learning Objectives

  • Students will be able to identify the value of dimes and pennies.
  • Students will be able to add two-digit numbers using dimes and pennies as a visual aid.
  • Students will be able to determine the total cost of items by adding their prices together.

Educator Instructions

  • Introduction (5 mins)
    Begin by discussing what happens when you go shopping. Talk about receipts and how they show the price of each item and the total cost. Introduce the Muffin Shop theme and explain that they will be adding prices together like they are shopping.
  • Video Viewing (7 mins)
    Watch the YouTube video "Grade 1:Math Lesson # 75 CANADIAN Adding Two-Digit Numbers Using Dimes And Pennies." Encourage students to follow along with the video and count the coins with the teacher.
  • Guided Practice (8 mins)
    After the video, work through similar examples on the board, having the students use Canadian play money (dimes and pennies) to represent the prices of different muffin shop items. Guide them through the process of adding the ones (pennies) first and then the tens (dimes).
  • Independent Practice (10 mins)
    Provide students with a worksheet featuring different muffin shop items and their prices. Have them add the prices together to find the total cost, using dimes and pennies as needed. Example problems: Donut (32 cents) + Muffin (15 cents) = ? Cookie (21 cents) + Cupcake (25 cents) = ?
  • Wrap-up (5 mins)
    Review the key concepts of place value and adding two-digit numbers. Ask students to share what they learned and how they can use this skill in real life (e.g., at the store, buying toys).

Interactive Exercises

  • Muffin Shop Role-Play
    Set up a pretend muffin shop in the classroom with different muffins and cookies labeled with prices (using cents). Have students take turns being the cashier and the customer, using play money to buy items and calculate the total cost.

Discussion Questions

  • What is the value of a dime? What is the value of a penny?
  • When we add two numbers, which place do we start with, the ones or the tens?
  • How can using coins help us add bigger numbers?

Skills Developed

  • Addition
  • Place Value
  • Problem Solving
  • Counting

Multiple Choice Questions

Question 1:

What coin is worth 10 cents?

Correct Answer: Dime

Question 2:

What coin is worth 1 cent?

Correct Answer: Penny

Question 3:

If you have 2 dimes, how many cents do you have?

Correct Answer: 20 cents

Question 4:

If you have 3 pennies, how many cents do you have?

Correct Answer: 3 cents

Question 5:

Which number is in the ones place in 25?

Correct Answer: 5

Question 6:

Which number is in the tens place in 42?

Correct Answer: 4

Question 7:

A muffin costs 35 cents. You pay with 3 dimes and 5 pennies. Is that enough?

Correct Answer: Yes

Question 8:

A cookie costs 20 cents. You pay with 1 dime and 5 pennies. Is that enough?

Correct Answer: No

Question 9:

Which of these is worth more?

Correct Answer: 1 dime

Question 10:

A cupcake costs 42 cents and a donut costs 11 cents. How much do they cost together?

Correct Answer: 53 cents

Fill in the Blank Questions

Question 1:

A _______ is worth 10 cents.

Correct Answer: dime

Question 2:

A _______ is worth 1 cent.

Correct Answer: penny

Question 3:

10 cents is the same as ______ pennies.

Correct Answer: 10

Question 4:

When we add, we start with the _______ place.

Correct Answer: ones

Question 5:

The number 34 has _______ tens.

Correct Answer: 3

Question 6:

The number 52 has _______ ones.

Correct Answer: 2

Question 7:

2 dimes and 3 pennies is _______ cents.

Correct Answer: 23

Question 8:

If a muffin costs 25 cents, and you have 2 dimes and 5 pennies, you have _______ money to buy it.

Correct Answer: enough

Question 9:

3 dimes + 2 dimes = _______ dimes

Correct Answer: 5

Question 10:

4 pennies + 1 penny = _______ pennies

Correct Answer: 5

Educational Standards

1.NBT.C.4:Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten. CCSS.Math.Content.1.OA.A.1:Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. CCSS.Math.Content.1.NBT.B.2:Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

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