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

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

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

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

## Worksheets

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.
Year 2
Maths
Worksheet
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.
Year 2
Maths
Worksheet
Vocabulary Cards: Fact Family Houses
Worksheet
Vocabulary Cards: Fact Family Houses
Use these vocabulary cards with the EL Support Lesson: Fact Family Houses.
Year 2
Maths
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.
Year 2
Maths
Worksheet
Solve the Story Problem
Worksheet
Solve the Story Problem
Practise solving different types of subtraction word problems with this worksheet. Plenty of space is included for students to show their thinking!
Year 2
Maths
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 practise writing three related numbers.
Year 2
Maths
Worksheet

## Lesson Plans

Subtraction Towers
Lesson plan
Subtraction Towers
Year 2
Maths
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!
Year 2
Maths
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.
Year 2
Maths
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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