# 2.OA.A.1 Worksheets, Workbooks, Lesson Plans, and Games

#### CCSS.MATH.CONTENT.2.OA.A.1

:
"Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem."

Our Take: The second grader can choose from a variety of different problem-solving strategies when solving one- and two-step addition and subtraction word problems. Some of these strategies may include base-ten drawing, open number line, or writing a number sentence. The computation difficulty increases in second grade as students are challenged to add and subtract within 100.

These worksheets, games, and lesson plans can help students practice this Common Core State Standards skill.

## Worksheets

Tidy Sum 100
Worksheet
Tidy Sum 100
Work on addition while finding sums of 100 using a deck of playing cards and this first grade math worksheet.
Math
Worksheet
Worksheet
Does your child need help with two-digit addition? This colorful flower-filled worksheet is a great way to give her the practice she needs.
Worksheet
Worksheet
Test your child's arithmetic skills with a worksheet on two-digit addition. He'll practice his addition facts know-how and flex his mental math skills.
Worksheet
Comparing Numbers: Less Than
Worksheet
Comparing Numbers: Less Than
Make the math concept "less than" more clear with a colorful worksheet that gets him practicing with number comparisons to make each equation true.
Math
Worksheet
Subtraction Equations
Worksheet
Subtraction Equations
Can your second grader come up with subtraction equations that equal the number in each star?
Math
Worksheet
Math Mosaic
Worksheet
Math Mosaic
After kids solve the two-digit addition and subtraction problems on this second grade math mosaic, they use the key to color in the shapes.
Math
Worksheet

## Lesson Plans

Math Story Problems
Lesson plan
Math Story Problems
Help your students make the connection between what they're learning in the classroom and why they need it in the real world with this lesson on word problems.
Math
Lesson plan
What's That Number?
Lesson plan
What's That Number?
Practice finding unknown numbers in addition equations using fun and silly word problems.
Math
Lesson plan
Math Heroes
Lesson plan
Math Heroes
Name that hero! In this lesson, your students will practice adding two digit numbers together. They will get more comfortable adding bigger numbers together, making it easier to add three digit numbers later on.
Math
Lesson plan
Lesson plan
Make a math mystery! In this lesson, help your students understand the relationship between addition and subtraction and how a missing addend word problem is represented with a number sentence.
Math
Lesson plan
Subtraction Stories
Lesson plan
Subtraction Stories
Let’s make subtraction real! In this lesson, students dive into three-digit subtraction by solving real-world word problems.
Math
Lesson plan
Subtraction Pictograph
Lesson plan
Subtraction Pictograph
Subtraction can be learned and practiced through a pictograph! In this lesson, your students will become more comfortable with subtracting numbers.
Math
Lesson plan

## Workbooks

No workbooks found for this common core node.

## Games

Two-Step Subtraction
Game
Two-Step Subtraction
Kids subtract apples in two-step equations to find a target number.
Math
Game
Game
Math
Game
Game
Help Roly get to the party on the other side of the river by solving addition word problems!
Math
Game

## Exercises

No exercises found for this common core node.

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