Regrouping Fun: Adding with Tens and Ones!

Math Grades 1st Grade 9:10 Video
Print Lesson Plan Watch Video

Lesson Description

Learn how to add bigger numbers by regrouping ones into tens! We'll use pictures and easy steps to make adding fun.

Video Resource

Addition with Regrouping - 1st Grade | Math | Kids Academy

Kids Academy

Duration: 9:10
Watch on YouTube

Key Concepts

  • Place Value (Tens and Ones)
  • Regrouping (Making a ten)
  • Addition

Learning Objectives

  • Students will be able to identify the tens and ones in a two-digit number.
  • Students will be able to regroup ones into a ten when adding.
  • Students will be able to solve addition problems with regrouping using visual aids.

Educator Instructions

  • Introduction (5 mins)
    Begin by reviewing what tens and ones are. Use blocks or drawings to represent numbers like 12 (1 ten and 2 ones). Ask students to identify the tens and ones in various numbers.
  • Video Viewing (7 mins)
    Watch the Kids Academy video 'Addition with Regrouping - 1st Grade'. Pause the video at key points to explain the steps and ask clarifying questions. Focus on how the ones are grouped to make a new ten.
  • Guided Practice (10 mins)
    Work through example problems on the board. Use drawings of tens and ones (sticks and dots) to represent the numbers. Guide students through the process of adding the ones, regrouping if needed, and then adding the tens. Example: 15 + 7. Draw 1 ten and 5 ones + 7 ones. Circle 10 ones to make a new ten. Now you have 2 tens and 2 ones = 22.
  • Independent Practice (10 mins)
    Provide students with a worksheet of addition problems that require regrouping. Encourage them to use drawings to help them solve the problems. Circulate the room to provide assistance as needed.
  • Wrap-up (3 mins)
    Review the main concepts of the lesson. Ask students to explain in their own words how to regroup when adding. Collect worksheets for assessment.

Interactive Exercises

  • Regrouping Game
    Use base-ten blocks. Give students a number (e.g., 16) and ask them to represent it with the blocks. Then, give them another number to add (e.g., 8). Have them combine the ones. If they have more than 9 ones, guide them to exchange 10 ones for 1 ten. Count the total number of tens and ones.

Discussion Questions

  • What happens when you have more than 9 ones?
  • Why is it helpful to regroup when adding?
  • Can you think of a time when you used regrouping outside of math class?

Skills Developed

  • Addition
  • Place Value
  • Problem-solving
  • Visual Representation

Multiple Choice Questions

Question 1:

What is 1 ten and 5 ones?

Correct Answer: 15

Question 2:

When adding, if you have more than 9 ones, what do you do?

Correct Answer: Make a ten

Question 3:

What is 10 ones the same as?

Correct Answer: 1 ten

Question 4:

What number is made of 2 tens and 3 ones?

Correct Answer: 23

Question 5:

Which picture shows 1 ten and 7 ones?

Correct Answer: OOOOOOOOOO OOOOOOO

Question 6:

What is 9 + 1?

Correct Answer: 10

Question 7:

If you have 12 ones, how many tens and ones can you make?

Correct Answer: 1 ten and 2 ones

Question 8:

What is 20 + 5?

Correct Answer: 25

Question 9:

Why do we regroup?

Correct Answer: To make adding easier

Question 10:

What is 1 ten and 0 ones?

Correct Answer: 10

Fill in the Blank Questions

Question 1:

10 ones make 1 ____.

Correct Answer: ten

Question 2:

The number 12 has 1 ____ and 2 ones.

Correct Answer: ten

Question 3:

When we regroup, we make a new ____.

Correct Answer: ten

Question 4:

We regroup when we have more than 9 ____.

Correct Answer: ones

Question 5:

2 tens and 0 ones is the number ____.

Correct Answer: 20

Question 6:

If you have 1 ten and 5 ones and add 5 more ones, you need to ____.

Correct Answer: regroup

Question 7:

The place on the right is the ____ place.

Correct Answer: ones

Question 8:

The place on the left in a two-digit number is the ____ place.

Correct Answer: tens

Question 9:

Regrouping makes adding ____.

Correct Answer: easier

Question 10:

18 has 1 ____ and 8 ones.

Correct Answer: ten

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. 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: 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.

Teaching Materials

Download ready-to-use materials for this lesson:

Student Worksheet Classroom Slides Assessment Quiz Export to Google Docs
Add to Google Classroom

User Actions

Sign in to save this lesson plan to your favorites.

Sign In

Share This Lesson

Related Lesson Plans