# 1.OA.D.8 Worksheets, Workbooks, Lesson Plans, and Games

#### CCSS.maths.CONTENT.1.OA.D.8

:
"Determine the unknown whole number in an addition or subtraction equation relating three whole numbers."

These worksheets and games 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
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.
Year 2
Maths
Worksheet
Worksheet
How many ways can you add up to ten? In this worksheet, kids practise making ten by filling in the missing number in each equation to make it equal ten.
Year 2
Maths
Worksheet
Worksheet
Your can experiment with addition facts here in the maths lab. Can he write the missing addition symbols and complete the problems?
Year 2
Maths
Worksheet
Worksheet
Not only can your child practise her maths facts with numbers between 1 and 20, she'll also practise writing addition problems with the correct symbols.
Year 2
Maths
Worksheet
Reach For The Stars #4
Worksheet
Reach For The Stars #4
Addition and subtraction fact families are blasting off the page. They're grouped neatly together and ready for your kid to learn them backwards and forwards.
Year 2
Maths
Worksheet

## Lesson Plans

No plans found for this common core node.

## Workbooks

No workbooks found for this common core node.

## Games

What's Missing? Subtraction Song
Song
What's Missing? Subtraction Song
Kids figure out how many are missing with this catchy subtraction song.
Year 2
Maths
Song
Subtraction Pizza Party
Game
Subtraction Pizza Party
Mama mia! Kids must use subtraction skills to craft perfect pizzas in this game.
Year 2
Maths
Game
Match: Addition within 20 and Missing Factors
Game
Match: Addition within 20 and Missing Factors
Kids practise matching each addition equation to its missing factor in this interactive maths game.
Year 2
Maths
Game
Match: Addition Within 10 and Missing Factors
Game
Match: Addition Within 10 and Missing Factors
Kids hone their single-digit addition skills as they match equations with their missing factors.
Year 2
Maths
Game
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.
Year 2
Maths
Game
Match: Subtraction Within 10 and Missing Factors
Game
Match: Subtraction Within 10 and Missing Factors
In this matching game, first graders look at subtraction facts that are missing factors.
Year 2
Maths
Game

## Exercises

No exercises found for this common core node.

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