Using Count on Number Line Addition Activity, students count forward from one number to another number on a number line to solve the addition equations.

While using our Decomposing the Numbers Worksheet, students break apart the numbers into pairs by showing 2 ways to decompose each number.

Using Missing Number Addition and Subtraction Activity, students fill in the missing addends to complete the addition and subtraction number sentences.

Using Addition 0-12 Flash Cards, students practice adding two numbers between 0-12 to build mental math and fluency skills.

This adding 8 word problems worksheet gives 1st graders five short stories to solve by adding 8. Each story has a number sentence to finish, and an answer key is included for fast checking.

Build fast sums with this adding nine matching worksheet for 1st grade. Kids match six add-nine facts, then solve four more, and an answer key makes checking quick and easy.

This counting money worksheet has 1st graders count rows of pennies, add two sets together, and solve a coin story problem. An answer key is included, so money practice takes no prep at all.

This Counting Coins Worksheet gives 1st Grade students practice counting pennies, nickels and dimes, circling coins to make an amount and solving a story problem, with an answer key included.

This Adding Ten Equations Worksheet gives 1st grade students sixteen ten more problems with a printed answer box for each one, so adding ten becomes quick and automatic. An answer key is included.

This adding six equations worksheet gives 1st grade students sixteen addition problems with every sum within 20 and a printed box for each answer. An answer key is included for quick checking.

Using the Adding 15 Song (Lyric Mjusic Video), students sing and practice adding 15 with all addition facts 1-15. Your kids will learn how to add 15.

Using the Adding Songs (MP3 Album), practice adding and addition facts by singing and adding these 15 addition songs. Great for memorizing addition facts!

Using the Adding 10 Song (MP3), students sing and practice adding 10 with all addition facts 1-15. Your kids will learn how to add 10.

Using the Adding 13 Song (MP3), students sing and practice adding 13 with all addition facts 1-15. Your kids will learn how to add 13.

Using the Adding 14 Song (MP3), students sing and practice adding 14 with all addition facts 1-15. Your kids will learn how to add 14.

Using Why It Works Explaining Addition and Subtraction Worksheet, students solve the addition and subtraction equations below by applying the properties.

In this Let's Workout Our Brain Add Subtract Within 20 Activity, students fluently add and subtract within 20 using mental strategies.

In this 1.OA.4 First Grade Common Core Lesson, students practice finding the missing added using subtraction as strategy to solve.

In this 1.OA.7 First Grade Common Core Lesson, students will decide given equations are true or false to understand the meaning of the equal sign.