Learning Library

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

#### CCSS.MATH.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 practice this Common Core State Standards skill.

## Worksheets

Worksheet
How many ways can you add up to ten? In this worksheet, kids practice making ten by filling in the missing number in each equation to make it equal ten.
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.
Math
Worksheet
Worksheet
Your can experiment with addition facts here in the math lab. Can he write the missing addition symbols and complete the problems?
Math
Worksheet
Worksheet
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.
Math
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.
Math
Worksheet
Mystery Number
Worksheet
Mystery Number
Find the mystery number in this intro-to-algebra worksheet that practice places value.
Math
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.
Math
Song
Subtraction Pizza Party
Game
Subtraction Pizza Party
Mama mia! Kids must use subtraction skills to craft perfect pizzas in this game.
Math
Game
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.
Math
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.
Math
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.
Math
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.
Math
Game

## Exercises

No exercises found for this common core node.

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