2 digit Addition and Subtraction to 100 1st Grade Guided Math Unit Lessons

Teach 2-digit addition and subtraction to 100 with this engaging and comprehensive 1st grade math unit! Happy Math 2-Digit Addition and Subtraction includes everything you need for your math block: teaching slides, hands-on activities for small groups, math centers, worksheets, anchor charts, shape posters, and assessment.

This unit covers:

• Addition within 100 (No Regrouping)
• Introducing Regrouping to make a 10 using concrete strategies
• Subtraction within 100 (No Regrouping)
• 2-Digit Addition and Subtraction word problems

These units are designed to make planning as easy and low prep as possible for you while being engaging and fun for students! 

Included in the unit:

⭐️ Mini Lesson Slides:

These colorful and engaging teaching slides provide a comprehensive overview of 2-digit addition and subtraction strategies.

They are designed to be easy to follow and include examples and practice problems to reinforce the concepts being taught. No planning or prep required, just click and teach! 

Powerpoint and Google Slides Versions Included

Each of the Lessons Includes:

✅ Learning Objective

✅ Vocabulary

✅ Teaching Slides 

✅ Practice Activities 

✅ Critical Thinking

There are 14 Mini Lessons included:

Week 1: 2-Digit Addition

Lesson 1: Adding 2-Digit with 1-Digit

Lesson 2: Adding 2-Digit and Multiples of 10

Lesson 3: Adding 2-Digit Numbers with base 10 blocks

Lesson 4: Adding 2-Digit Numbers with 120 Chart

Lesson 5: Adding 2-Digit Numbers with an Open Number Line

Week 2: 2-Digit Addition
Lesson 6: Adding 2-Digit Numbers with Expanded Form

Lesson 7: Adding 2-Digit Numbers with Standard Algorithm

Lesson 8: Adding 2-Digit Numbers with Regrouping Part 1

Lesson 9: Adding 2-Digit Numbers with Regrouping Part 2

Lesson 10: 2-Digit Addition Word Problems

Week 3: 2-Digit Subtraction

Lesson 11: Subtract Multiples of 10

Lesson 12: 2-Digit Subtraction Part 1

Lesson 13: 2-Digit Subtraction Part 2

Lesson 14: 2-Digit Subtraction Word Problems

⭐️ Hands-On Addition Activities for Whole Group, Small Group, and Centers

These activities were created for hands-on practice with addition and subtraction within 100 concepts!

I included activities to use during:

• Small Group Time – students get guided practice at the teacher table during math rotations
• Whole Group – I included activities that are perfect for whole group review during or at the end of your unit
• Math Centers - I love re-using activities we have already done together at teacher table because students are able to complete them independently!

Activities Included:

• Build and Add/ Build and Subtract Math Mats
• 120 Chart Add/ 120 Chart Subtract Math Mats
• Open Number Line Math Mats
• Expanded Form Math Mats
• 2-Digit Addition Math Mats
• Subtract Multiples of 10 Math Mat
• 2-Digit Subtraction Math Mats
• Equation Cards
• Write and Wipe Cards
• Double Stuffed Task Cards
• Double Stuffed Roll and Add
• My 2-Digit Strategy Books
• Addition and Subtraction Word Problems
• Spin and Subtract
• Spotty Subtract Multiples of 10 Task Cards
• Berry Good 2-Digit Addition Math Craft
  

For each activity, I included teacher notes that give ideas for using the activity in your classroom!

Math Mats are my favorite for no-prep activities. These activities are perfect for centers or small group work. They are designed to be hands-on and interactive, allowing students to apply the concepts they have learned in a fun and engaging way.

To use: just slide them into dry erase pockets and add manipulatives for hands-on practice!

⭐️ Math Anchor Charts and Mini Posters

These posters are perfect for classroom display and serve as a visual reminder of the key concepts covered in the unit. They include colorful graphics and clear explanations of concepts. Create a math reference wall to add to throughout your unit.

2-Digit Addition and Subtraction Strategy Posters are Included!

I also love using the included mini posters to make vocabulary rings for students to access during small group and math centers. 

And I give each of my students the individual Strategy Sheet to keep in their math folders for easy reference!

⭐️ Worksheets for daily independent practice

This unit includes 20 worksheets for independent practice of the skills taught during the mini lessons! Perfect for math centers, independent work, and morning work.

There are worksheets included that align with each day of the unit so students always have opportunities to apply their learning with independent practice of the skill!

⭐️ Assessment

Assess your students before, during, and after your unit!

Includes:

Exit Slips:

• These are designed to be quick check-in used throughout your unit for formative assessment.
• At the end of your lesson, give an exit slip to each student to complete. Collect and use the data to guide the next days small group instruction.
• 15 exit slips included!

Brain Check

• This is designed to be a summative assessment at the end of the unit.
• I included 2 versions that could be used as a pre-test and post test in your classroom.
• Answer keys are also included!

Want Guided Math lessons to use all year long? Grab the Happy Math Bundle!

Here's what teachers are saying:

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