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1st grade**

Addition and Missing Factors**

Common Core**

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All in the Fact Family

Workbook

All in the Fact Family

Number sentences make more sense when picking apart fact families and putting them back together! This colorful workbook helps kids make connections between addition and subtraction.

1st grade

Math

Workbook

Math Crossword Puzzles for Kids

Worksheet

Math Crossword Puzzles for Kids

Make math more enjoyable with these simple math crossword puzzles for kids!

1st grade

Math

Worksheet

Math Crosswords

Worksheet

Math Crosswords

Here's a fun way to approach simple math facts. Use these math crosswords to review addition the fun way!

1st grade

Math

Worksheet

Match: Addition within 20 and Missing Factors

Game

Match: Addition within 20 and Missing Factors

Kids practice matching each addition equation to its missing factor in this interactive math game.

1st grade

Math

Game

Where is my Fact Family?

Lesson Plan

Where is my Fact Family?

This nifty lesson helps kinesthetic learners reinforce their knowledge of the commutative property. Students will love the challenge of matching equations with their fact families.

1st grade

Math

Lesson Plan

Snail Fact Families

Worksheet

Snail Fact Families

Kids add, subtract, or use math facts they have committed to memory to fill in the missing numbers in the fact families on this second grade math worksheet.

1st grade

Math

Worksheet

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

Mystery Addends: Representing Word Problems

Lesson Plan

Mystery Addends: Representing Word Problems

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.

1st grade

Math

Lesson Plan

Balance Each Side

Worksheet

Balance Each Side

This worksheet helps students understand how an equals sign means “the same as.” By filling in missing factors, students gain practice seeing how multiple number combinations can make the same number.

1st grade

Math

Worksheet

Match: Addition Within 20 and Missing Factors 2

Game

Match: Addition Within 20 and Missing Factors 2

Fill in these addition facts! This game challenges kids to match missing factors to each equation.

1st grade

Math

Game

Give Me 10!

Lesson Plan

Give Me 10!

Roll some dice to introduce the early concepts of associative and commutative properties in addition by composing and decomposing 10. Worksheets and a quiz are included!

1st grade

Math

Lesson Plan

Make it Fair With Equal Groups

Worksheet

Make it Fair With Equal Groups

Kids love it when things are fair! Help students make equal groups of toys while exploring how the equals sign means “the same as.” Students will draw the missing objects and write the missing factors to balance the equations.

1st grade

Math

Worksheet

Make it the Same

Worksheet

Make it the Same

It’s time to learn more about the equals sign! By filling in missing factors, students learn how the equals sign means “the same as.”

1st grade

Math

Worksheet

Balancing Act

Worksheet

Balancing Act

These scales need balancing! By filling in missing addends, this worksheet helps students understand how an equals sign means “the same as.”

1st grade

Math

Worksheet

Addition Symbols Math Lab

Worksheet

Addition Symbols Math Lab

Your can experiment with addition facts here in the math lab. Can he write the missing addition symbols and complete the problems?

1st grade

Math

Worksheet

Simple Arithmetic

Worksheet

Simple Arithmetic

Have a ball with this addition and subtraction worksheet! Kids fill in the missing numbers on each beach ball to make its statement true.

1st grade

Math

Worksheet

Math Lab Addition #2

Worksheet

Math Lab Addition #2

Not only can your child practice her math facts with numbers between 1 and 20, she'll also practice writing addition problems with the correct symbols.

1st grade

Math

Worksheet

Addition Fact Families: Reach for the Stars #1

Worksheet

Addition Fact Families: Reach for the Stars #1

Review addition fact families with your child to help him reach for the stars! A mix of addition and subtraction will sharpen his math skills.

1st grade

Math

Worksheet