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# 1.OA.B.4 Worksheets, Workbooks, Lesson Plans, and Games

#### CCSS.MATH.CONTENT.1.OA.B.4

:
"Understand subtraction as an unknown-addend problem."

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

## Worksheets

Fact Family Practice: Icy Fact Families
Worksheet
Fact Family Practice: Icy Fact Families
In this fact family practice worksheet, kids show that they understand the inverse relationship between addition and subtraction.
Math
Worksheet
Make Your Own Fact Family Triangles
Worksheet
Make Your Own Fact Family Triangles
Students will love getting to make and cut out their own fact family triangles as they practice writing three related numbers.
Math
Worksheet
Vocabulary Cards: Fact Family Triangles
Worksheet
Vocabulary Cards: Fact Family Triangles
Use these vocabulary cards with the EL Support Lesson Plan: Fact Family Triangles.
Math
Worksheet
Solve the Story Problem
Worksheet
Solve the Story Problem
Practice solving different types of subtraction word problems with this worksheet. Plenty of space is included for students to show their thinking!
Math
Worksheet
Number Bonds All Around
Worksheet
Number Bonds All Around
Number bonds are a great way for your kids to explore the relationship between addition and subtraction. By filling in the missing numbers, students get experience with fact families.
Math
Worksheet
Worksheet
Itâ€™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.
Math
Worksheet

## Lesson Plans

Subtraction Towers
Lesson plan
Subtraction Towers
Math
Lesson plan
Fact Family Trees
Lesson plan
Fact Family Trees
Number facts are related, just like families! Help students learn all about fact families while they make fact family trees!
Math
Lesson plan
Dots & Dots of Fact Families
Lesson plan
Dots & Dots of Fact Families
Get out the dominoes! This fun lesson help students visualize how addition and subtraction are related, all while building their fact family fluency.
Math
Lesson plan

## Workbooks

No workbooks found for this common core node.

## Games

No games found for this common core node.

## Exercises

No exercises found for this common core node.

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