Addition within 20 Resources

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Addition Within 20
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Spring Math Assessment Subtraction within 20
Spring Math Assessment Subtraction within 20
Worksheet
Spring Math Assessment Subtraction within 20
Use these fun toy themed math problems to assess your students’ ability to solve addition and subtraction problems within 20.
Kindergarten
Math
Worksheet
Addition Number Stories
Addition Number Stories
Worksheet
Addition Number Stories
Practice addition from a different approach with these number stories. Find the addition equation in each word problem.
1st grade
Math
Worksheet
Addition Color by Number
Addition Color by Number
Worksheet
Addition Color by Number
Looking for a different way to engage your child with his addition facts? This color by number underwater scene might do the trick!
1st grade
Math
Worksheet
Three Addend Word Problems
Three Addend Word Problems
Lesson Plan
Three Addend Word Problems
Support your students' understanding of word problems as they invent strategies to add three addends in any order. Use this scaffolded EL lesson plan alone or with **How'd You Get that Many?**
1st grade
Math
Lesson Plan
Adding Within 20
Adding Within 20
Lesson Plan
Adding Within 20
This scaffolded EL lesson will help your students fluently add within 20, while reinforcing parts of a whole. Use as a pre-lesson for Addition: Over in a Flash, or as a stand alone activity.
2nd grade
Math
Lesson Plan
Very Hungry Addition
Very Hungry Addition
Lesson Plan
Very Hungry Addition
Addition and language practice go hand in hand in this lesson that uses *The Very Hungry Caterpillar* as an anchor text. Students practice counting on using a number line. This lesson can be used alone or alongside **Math with Bears** lesson.
1st grade
Math
Lesson Plan
Build Your Own Number Bond
Build Your Own Number Bond
Worksheet
Build Your Own Number Bond
It’s time for students to make their own number bonds! In this activity, students will be given number sentences to solve and represent using number bonds.
1st grade
Math
Worksheet
Assessment: Addition to 20
Assessment: Addition to 20
Worksheet
Assessment: Addition to 20
It's time to check in on those addition skills! Use this math activity to assess your students’ understanding of addition by having them solve addition problems within 20.
1st grade
Math
Worksheet
Addition Number Grab
Addition Number Grab
Lesson Plan
Addition Number Grab
Give students plenty of practice adding to 20 with this fun game! Use this scaffolded EL Lesson alone or for more addition practice before teaching the **Do Math with M&Ms** lesson.
1st grade
Math
Lesson Plan
Inverse Subtraction Practice
Inverse Subtraction Practice
Worksheet
Inverse Subtraction Practice
Your child will practice subtraction, by using inverse operations. Find the missing numbers to solve the subtraction problems.
1st grade
Math
Worksheet
Number Line Frog Leap One-Digit Addition
Number Line Frog Leap One-Digit Addition
Worksheet
Number Line Frog Leap One-Digit Addition
Single-digit addition is a leap away using number lines like the ones on this worksheet.
1st grade
Math
Worksheet
Halloween Hundreds Chart Race
Halloween Hundreds Chart Race
Lesson Plan
Halloween Hundreds Chart Race
This Halloween-themed hundreds chart game has plenty of tricks and treats! Students will roll two dice to move up and down the chart to be the first to 100. Players will also recognize important number patterns as they move their marker.
1st grade
Math
Lesson Plan
Reflect on the Context First!
Reflect on the Context First!
Lesson Plan
Reflect on the Context First!
Emphasize student understanding and reasoning! This lesson plan helps learners solve story problems using sense-making strategies. This can be used alongside the lesson Solving Word Problems or as a stand-alone lesson.
2nd grade
Math
Lesson Plan
Add Them Up!
Add Them Up!
Lesson Plan
Add Them Up!
Challenge students to find the sum of three addends while playing a fun dice game! Use this scaffolded EL Lesson alone or for more addition practice adding with dice in preparation for the **Active Math** lesson.
1st grade
Math
Lesson Plan
Additive Inverse Practice
Additive Inverse Practice
Worksheet
Additive Inverse Practice
Have your child work backwards to solve addition problems and learn more about the additive inverse.
1st grade
Math
Worksheet
The Numbers Are Missing!
The Numbers Are Missing!
Worksheet
The Numbers Are Missing!
Uh-oh, the numbers have gone missing! Help students learn that the equals sign means “the same as” as they fill in missing factors to balance the equations.
1st grade
Math
Worksheet
Jack and the Beanstalk Math
Jack and the Beanstalk Math
Worksheet
Jack and the Beanstalk Math
Jack and the Beanstalk math means counting beans, and adding up how many songs the magic harp knows how to play in word problems for young kids.
1st grade
Math
Worksheet
Go Hunting for Four Leaf Clovers: A St. Patrick's Day Version of Go Fish!
Go Hunting for Four Leaf Clovers: A St. Patrick's Day Version of Go Fish!
Lesson Plan
Go Hunting for Four Leaf Clovers: A St. Patrick's Day Version of Go Fish!
Want a fun way to practice your math facts? How about with a St. Patrick's Day-themed variation of Go Fish! In this St. Patrick's Day lesson plan, students will create their own Go Fish! cards with addition math facts up to 20.
1st grade
Math
Lesson Plan
Add Three Numbers
Add Three Numbers
Worksheet
Add Three Numbers
Adding two numbers? Too easy. See if your kindergarten math whiz can add three!
Kindergarten
Math
Worksheet
Assessment: Adding Three Numbers
Assessment: Adding Three Numbers
Worksheet
Assessment: Adding Three Numbers
Let's see those addition skills! Use this math assessment to check in on your students’ abilities to add three numbers by having them solve these problems.
1st grade
Math
Worksheet
Writing Christmas-Themed Word Problems
Writing Christmas-Themed Word Problems
Lesson Plan
Writing Christmas-Themed Word Problems
Your students will turn boring number sentences into fun, Christmas-themed word problems! They will get practice with math and writing as they use their creative juices to write and solve single digit addition word problems.
1st grade
Math
Lesson Plan
Ten Time
Ten Time
Lesson Plan
Ten Time
Students will gain fluency with adding multiples of ten in this hands-on lesson that builds number sense.
1st grade
Math
Lesson Plan
Preschool Addition #17
Preschool Addition #17
Worksheet
Preschool Addition #17
This preschool addition worksheet is perfect kids who have mastered counting and are ready for a simple introduction to addition.
Preschool
Math
Worksheet
How Many Shapes?
How Many Shapes?
Worksheet
How Many Shapes?
This worksheet will help your kindergarten students practice identifying and writing each part of an addition equation.
Kindergarten
Math
Worksheet
Break the Numbers Down!
Break the Numbers Down!
Worksheet
Break the Numbers Down!
Students learn to decompose numbers through this fun activity. After being given a number, young mathematicians come up with their own way to decompose the number into two different numbers.
1st grade
Math
Worksheet

Addition within 20 Resources

If your students have mastered adding numbers under 10, move them on up with these resources for adding numbers within 20. These worksheets provide students with plenty of practice adding. There are also several lesson plans to give you ideas for teaching students how to add numbers within 20. If students struggle, you may want to review our addition within 10 lesson plans.

Accessible Addition Within 20 Resources

The need to calculate simple equations often comes up in day-to-day life—exchanging money, following recipes and determining elapsed time are a few common examples. The addition within 20 resources housed in the Learning Library caters to kids who start to dip into two-digit math.

The printable worksheets provide assorted assignments that sharpen this skill. Kids can practice finding the sum with traditional vertical and horizontal equations. There are also many addition-within-20 word problem printouts. Some of the worksheets are illustrative, like with spaceships or rainbow fish, to deliver visual and creative math lessons.

Hands-on activities help students refine what they have learned in the classroom. A creative game called Pocket Math includes the whole family. Everyone has to wear as many pockets as possible and young learners practice counting them all up. Bowling for Addition turns a DIY bowling game into a counting opportunity. The water bottle pins are marked with a value that students add up once the pins are knocked down.

Kids continue to build their counting capabilities with the online games, guided lessons, printable workbooks, interactive stories and other addition within 20 resources in the library.