Grade 2MathTEKS 2.4B

Grade 2 Math TEKS 2.4B:Add Two-Digit Numbers

Free, teacher-ready lessons and worksheets for Add Two-Digit Numbers in Grade 2 Math, fully aligned to Texas TEKS 2.4B.

Add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations

2
Lessons Available
18
Worksheets Available
Texas map for Grade 2 Math TEKS
ClearLessons0 Available
ClearLessons
    ClearSheets0 Available
    ClearSheets

      Grade 2 Math TEKS Lessons

      TEKS 2.4B: Add Two-Digit Numbers

      • Add 2-Digit Numbers

        About this lesson

        Learning Target: I can add two-digit numbers using mental strategies and properties of operations.

        Focuses On:

        • Breaking apart numbers by place value making them easier to add
        • Identifying compatible numbers to make addition easier

        Builds On:

        1.3F:

        Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20 (R).

        Next Level:

        3.4A:

        Solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction.

        Read More:

        This lesson is designed to support student understanding of adding two-digit numbers by using strategies to make mental math easier.


        The two instructional blocks in this lesson focus on breaking apart numbers and identifying compatible numbers in order to make addition easier.


        In the first instructional block, students practice breaking apart numbers and organizing them by tens and ones in order to make them easier to add.


        The second instructional block focuses on finding friendly numbers in order to make addition easier.


        Scaffolds and supports such as models and pictorial representations are intentionally built throughout the lesson to support conceptual learning.  

        Grade 2MathTEKS 2.4B

      • Subtract 2-Digit Numbers

        About this lesson

        Learning Target: I can subtract two-digit numbers using mental strategies and properties of operations.

        Focuses On:

        • Using addition to help solve subtraction problems

        Builds On:

        1.3F:

        Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20 (R).

        Next Level:

        3.4A:

        Solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction.

        Read More:

        This lesson is designed to support student understanding of subtracting two-digit numbers by using strategies to make mental math easier.


        The instructional block in this lesson focuses on addition and subtraction being inverse operations. Students practice using mental math to count up from the subtrahend when solving two-digit subtraction problems.


        Scaffolds and supports such as models and pictorial representations are intentionally built throughout the lesson to support conceptual learning.  

        Grade 2MathTEKS 2.4B

      Grade 2 Math TEKS Worksheets

      TEKS 2.4B: Add Two-Digit Numbers

      See all 10 worksheets

      • Addition: Expanded Form

        Grade 2MathTEKS 2.4B

      • Addition: Algorithm without Regrouping

        Grade 2MathTEKS 2.4B

      • Subtraction: Expanded Form

        Grade 2MathTEKS 2.4B

      • Subtraction: Algorithm with Regrouping

        Grade 2MathTEKS 2.4B

      • Subtraction: Algorithm without Regrouping

        Grade 2MathTEKS 2.4B

      • Addition: Algorithm with Regrouping

        Grade 2MathTEKS 2.4B

      • Addition: Place Value Blocks

        Grade 2MathTEKS 2.4B

      • Skill Builder: Addition: Expanded Form

        Grade 2MathTEKS 2.4B

      • Skill Builder: Addition: Algorithm with Regrouping

        Grade 2MathTEKS 2.4B

      • Skill Builder: Addition: Algorithm without Regrouping

        Grade 2MathTEKS 2.4B

      Bring These Lessons & Worksheets to Life

      Crystal Instruction turns ClearLessons and ClearSheets into an interactive teaching system that saves time, increases engagement, and provides real insight into student learning.

      Lesson Slides

      Worksheets

      Student Responses

      Teacher Dashboard

      TeachPracticeCheck Understanding

      Interactive Lesson Tools

      • Live Checkpoints

        Ask questions during lessons to instantly see who understands.

      • Instructional Pathways

        Automatically branch students to extra support or extension activities.

      • Exit Tickets

        Quickly assess learning at the end of every lesson.

      Worksheet Automation

      • Automatic Grading

        Students enter answers digitally and receive instant results.

      • Video Feedback

        Students watch step-by-step explanations when they miss a problem.

      • TEKS Skill Tracking

        See exactly which standards students have mastered.

      Teacher Insights

      • Real-Time Reports

        View student progress instantly during lessons and assignments.

      • Mastery Analytics

        Identify struggling students and target intervention quickly.

      • Save Time

        Spend less time grading and more time teaching.

      Everything is aligned to TEKS standards and designed specifically for classroom instruction.

      START FREE TEACHER TRIAL

      No credit card required · Setup takes less than 2 minutes.

      ★★★★★ Used by teachers across Texas to support TEKS instruction.

      Frequently Asked Questions

      How do you teach Add Two-Digit Numbers to 2nd graders?

      To teach Add Two-Digit Numbers to 2nd grade Math students, start with concrete, hands-on models, then move to pictorial representations before abstract notation. TEKS 2.4B asks students to add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations. Crystal Instruction's free ClearLessons for 2.4B walk through this progression with modeling, guided practice, and built-in checks for understanding, while the ClearSheets provide scaffolded practice. You can download both free on this page.

      What is 2.4B in 2nd grade Math?

      TEKS 2.4B is a 2nd grade Math standard for Add Two-Digit Numbers. It requires students to add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations. It is part of the Texas Essential Knowledge and Skills (TEKS) for Grade 2 Math.

      Where can I find free TEKS 2.4B lessons and worksheets?

      You can download free TEKS 2.4B lessons and worksheets directly on this page — no login or account required. Crystal Instruction provides free PDF versions of our Add Two-Digit Numbers ClearLessons and ClearSheets for Grade 2 Math, and each one is also available as an interactive lesson inside the full Crystal Instruction platform.

      What skills are included in 2nd grade Add Two-Digit Numbers?

      TEKS 2.4B (Add Two-Digit Numbers) covers the following 2nd grade Math skills: students learn to add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations. Free resources for this standard include Add 2-Digit Numbers, Subtract 2-Digit Numbers.

      Are TEKS 2.4B resources aligned to STAAR?

      Although Grade 2 Math is not directly tested on the Texas STAAR test, TEKS 2.4B builds the foundational skills students need for later STAAR assessments. Every Crystal Instruction ClearSheet for 2.4B is STAAR-aligned, and our ClearLessons are built to STAAR rigor using released STAAR test items, so students practice Add Two-Digit Numbers at the depth STAAR expects.