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Regrouping Rescue

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Lesson Plan

Regrouping Rescue Lesson Plan

Students will accurately add two-digit numbers within 100 using regrouping (carrying), clearly showing each step and placement of digits.

Developing fluency with addition and regrouping lays the groundwork for more advanced arithmetic and boosts confidence in problem solving.

Audience

6th Grade Students

Time

30 minutes

Approach

Model, practice, and apply regrouping steps with slides and hands-on work.

Materials

Prep

Review and Prepare Materials

10 minutes

  • Review the Regrouping Rescue Slide Deck to familiarize yourself with examples and prompts.
  • Print one copy of the Regrouping Rescue Worksheet for each student.
  • Set up the projector and queue the slide deck.
  • Gather individual whiteboards and dry-erase markers so each student has access.

Step 1

Warm-Up Activity

5 minutes

  • Display three addition problems (no regrouping needed) on the Regrouping Rescue Slide Deck.
  • Ask students to solve each on their whiteboards and hold up answers.
  • Quickly verify responses and clarify any errors.

Step 2

Regrouping Demonstration

10 minutes

  • Use the slide deck to introduce adding two-digit numbers that require carrying.
  • Highlight ones and tens columns; demonstrate when and how to carry a ten.
  • Think aloud each step, writing clearly so students can follow.
  • Ask questions (e.g., “Why do we carry here?”) to check understanding.

Step 3

Guided Practice

8 minutes

  • Hand out the Regrouping Rescue Worksheet.
  • In pairs, students complete the first set of problems, verbalizing each regrouping step.
  • Circulate, observe, and offer immediate feedback or prompts as needed.

Step 4

Independent Practice and Assessment

7 minutes

  • Students finish the remaining worksheet problems on their own.
  • Teacher circulates to support learners and note common misconceptions.
  • Collect worksheets to formatively assess each student’s mastery of regrouping.
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Slide Deck

Regrouping Rescue

Today’s Mission:
Master two-digit addition with regrouping (carrying)!

Get your whiteboards ready—let’s dive in.

Welcome students and introduce the lesson objective: Adding two-digit numbers within 100 using regrouping. Explain that today we’ll become “Regrouping Rescue” masters and practice adding with carrying.

Warm-Up Activity

Solve on your whiteboards (no regrouping):

  1. 23 + 12 = ____
  2. 45 + 32 = ____
  3. 56 + 21 = ____

Hold up your whiteboards when you’re done!

Explain the warm-up: no regrouping needed. Display problems, give students 1 minute to solve on whiteboards, then call on volunteers.

What Is Regrouping?

• Regrouping (carrying) happens when the sum of the ones column is greater than 9.
• We carry ten to the tens column.

Example: 18 + 17 → 8 + 7 = 15 → carry 1 to tens.

Define regrouping in student-friendly language. Draw two columns labeled “Tens” and “Ones.”

Example Problem

Place Value Chart:

Tens | Ones
4 | 7

  • 3 | 6
    ———————
    ?? | ??

Introduce the example problem. Sketch a place value chart on the board matching the slide. Emphasize column alignment.

Step 1: Add Ones

7 + 6 = 13

• Write down 3 in the ones place.
• Carry (regroup) the 1 to the tens column.

Walk through Step 1 out loud. Ask: “What is 7 + 6? Why do we carry?”

Step 2: Add Tens

4 + 3 = 7

Then add the carried 1:
7 + 1 = 8

Answer: 83

Demonstrate Step 2, showing how to include the carried 1. Ask students to predict the answer before revealing.

Try It Together

Use the place value chart:

Tens | Ones
5 | 8

  • 3 | 7
    ———————
    ?? | ??

Let’s add: Ones → ____; Tens → ____

Solve 58 + 37 together. Invite students to call out each step. Reinforce place value alignment and clear notation.

Guided Practice

In pairs, complete Problems 1–4 on the Regrouping Rescue Worksheet.

• Show all steps.
• Talk through your regrouping.

Hand out the worksheet. Explain pair work and remind students to verbalize each regrouping step.

Independent Practice

Now on your own, complete Problems 5–8 on the Regrouping Rescue Worksheet.

Remember to:
• Align digits by place value.
• Carry any tens clearly.

After pairs finish, ask students who feel confident to begin Problems 5-8. Circulate and support as needed.

Wrap-Up & Exit Ticket

Answer on your worksheet:

  1. What is one trick to remember when carrying?
  2. Why is place value alignment important?

Share your answers before you leave!

Wrap up by reviewing one key takeaway and collecting exit tickets. Prompt reflection on regrouping tips.

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Worksheet

Regrouping Rescue Worksheet

Guided Practice (Problems 1–4)

Complete each addition problem below. Use the place value chart to show your ones and tens, carry any extra ten, and write the final sum.

  1. 27 + 58 = ____

Tens | Ones
2 | 7

  • 5 | 8
    ————————
    __ | __






  1. 43 + 39 = ____

Tens | Ones
4 | 3

  • 3 | 9
    ————————
    __ | __






  1. 56 + 47 = ____

Tens | Ones
5 | 6

  • 4 | 7
    ————————
    __ | __






  1. 68 + 25 = ____

Tens | Ones
6 | 8

  • 2 | 5
    ————————
    __ | __






Independent Practice (Problems 5–8)

Solve each on your own. Align the digits, carry as needed, and show all work.

  1. 74 + 19 = ____






  1. 88 + 27 = ____






  1. 39 + 56 = ____






  1. 65 + 37 = ____






Exit Ticket

  1. What is one trick to remember when carrying a ten to the next column?



  1. Why is it important to align digits by place value before adding?






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