# Operations & Algebraic Thinking

CLUSTERS
• Represent And Solve Problems Involving Addition And Subtraction.
• 1.OA.1
Use addition and subtraction within ...
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• 1.OA.2
Solve word problems that call for ad...
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• Understand And Apply Properties Of Operations And The Relationship Between Addition And Subtraction.
• 1.OA.3
Apply properties of operations as st...
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• 1.OA.4
Understand subtraction as an unknown...
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• Add And Subtract Within 20.
• 1.OA.5
Relate counting to addition and subt...
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• 1.OA.6
Add and subtract within 20, demonstr...
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• Work With Addition And Subtraction Equations.
• 1.OA.7
Understand the meaning of the equal ...
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• 1.OA.8
Determine the unknown whole number i...
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• K-2
• 3-5
• 6-8
• 9-12
• math_attach

### Fish of Lake Mathatobie: Addition

Practice addition by using the arrow keys on your keyboard to catch the fish with the correct answer in Lake Mathatobie.

### Fuzzy Functions

Help Fuzzy figure out which operations (addition or subtraction) should replace the question marks.

### The Add and Subtract Body Part Dance

Boogie to the music in the Add and Subtract Body Part Dance!

### Ten Frame (NCTM)

Practice your skills counting to ten with ladybugs, stars, apples and more!

Pick the numbers that your kitten will grab so that they add up to the number shown.

### Kids Pick the Sign

Help Mr. Martini teach his students! Pick either ( + ) or ( - ) to make the equation correct.

### Save the Whale (ICT Games)

Send the whale back into the ocean by finding the pipe that will bring the length to equal ten.

### Museum of Tens (PBS)

Help Curious George fill in the missing museum artifacts to equal ten.

### Rabbit Takeaway

The bunnies need your subtraction skills to count how many are left when a few are taken away.

### Subtraction Sled (Toy Theater)

Help figure out how many more kids are needed to fill ten sleds then watch them slide down the hill!

### How Many Bubbles Under the Shell? (NCTM)

Use addition or subtraction to find out how many bubbles Okta is hiding under his shell.

### Catapult Count On (ICT Games)

Use the number line as a guide when you aim your sling shot to help the king knock down his castle!

### Funky Mummy (ICT Games)

Click the next button to reveal the equation and solve it to make the mummy dance!

### Soccer Subtraction (ICT Games)

Make a goal by clicking on players, to take them off the field, and correctly find the difference.

### Secret Number (Toy Theater)

Put on your wizard hat and find the secret number that is missing to balance the equation.

### Are You a Math Magician? Subtraction (Oswego)

Quick! Use your knowledge of subtraction facts and correctly answer as many equations as you can!

### Busy Bees (Harcourt)

Buzz with the busy bees who need your subtraction skills to find out how many are in the hive.

It's time to add it up! Read the word problems then add the three numbers to find the sum.

### Addition and Subtraction Word Problems (Math Playground)

Become a master wizard of addition and subtraction when you solve these word problems.

### Sum Sense: Single-Digit Addition (Oswego)

Your challenge is to take the numbers given and place them in the correct space for the sum!

On your mark, get set, go! The more addition problems you solve, the faster your jet ski will go!

It's a jet ski race! The more subtraction problems you get correct, the faster you go!

### Which Sign Makes the Number Sentence True? (IXL)

Choose between the number signs of ( + ) or ( - ) to make the number sentence true.

### Speed Grid Challenge Subtraction (Oswego)

Stop the clock and hear the applause when you correctly balance the subtraction equations.

### Dinosaur Dentist (ICT Games)

Help the dinosaur get rid of her toothache by solving the equation. Right answers make her dance!

### Lunar Landing

Land the spaceship on the correct sum. Don't let the spaceship land too quickly or you will crash!

### Ace of Numbers (Fuel the Brain)

Use the deck of cards to find the missing number in the equation before time runs out.

Be a math superhero when you break apart the numbers to equal ten and solve the addition problem.

### Alien Attack

Blast your way through an alien attack by correctly typing in the sum or difference.

### Arithmetic Four (Shodor)

Beat the clock when you play virtual Connect Four with a friend by solving these equations.

### Math Madness (Fuel the Brain)

Shoot as many hoops as you can before time runs out by choosing the right answer.

### Bug Race

Who can add whole numbers the fastest? The first bug across the finish line wins!

### Carrot Sticks

Quickly find the sum to earn as many carrots as possible.

### Are You a Math Magician? Addition (Oswego)

Are you a math magician? Use your addition skills to solve the equations before time runs out!

### Fish of Lake Mathatobie: Addition

Practice addition by using the arrow keys on your keyboard to catch the fish with the correct answer in Lake Mathatobie.

### Fuzzy Functions

Help Fuzzy figure out which operations (addition or subtraction) should replace the question marks.

### Are You a Math Magician? Subtraction (Oswego)

Quick! Use your knowledge of subtraction facts and correctly answer as many equations as you can!

### Carrot Sticks

Quickly find the sum to earn as many carrots as possible.

### Fuzzy Functions

Help Fuzzy figure out which operations (addition or subtraction) should replace the question marks.

### Number Bond Machines

Sorry, no games for this grade level.

### Fish of Lake Mathatobie: Addition

Practice addition by using the arrow keys on your keyboard to catch the fish with the correct answer in Lake Mathatobie.

### Fuzzy Functions

Help Fuzzy figure out which operations (addition or subtraction) should replace the question marks.

### The Add and Subtract Body Part Dance

Boogie to the music in the Add and Subtract Body Part Dance!

### Ten Frame (NCTM)

Practice your skills counting to ten with ladybugs, stars, apples and more!

Pick the numbers that your kitten will grab so that they add up to the number shown.

### Kids Pick the Sign

Help Mr. Martini teach his students! Pick either ( + ) or ( - ) to make the equation correct.

### Save the Whale (ICT Games)

Send the whale back into the ocean by finding the pipe that will bring the length to equal ten.

### Museum of Tens (PBS)

Help Curious George fill in the missing museum artifacts to equal ten.

### Rabbit Takeaway

The bunnies need your subtraction skills to count how many are left when a few are taken away.

### Subtraction Sled (Toy Theater)

Help figure out how many more kids are needed to fill ten sleds then watch them slide down the hill!

### How Many Bubbles Under the Shell? (NCTM)

Use addition or subtraction to find out how many bubbles Okta is hiding under his shell.

### Catapult Count On (ICT Games)

Use the number line as a guide when you aim your sling shot to help the king knock down his castle!

### Funky Mummy (ICT Games)

Click the next button to reveal the equation and solve it to make the mummy dance!

### Soccer Subtraction (ICT Games)

Make a goal by clicking on players, to take them off the field, and correctly find the difference.

### Secret Number (Toy Theater)

Put on your wizard hat and find the secret number that is missing to balance the equation.

### Are You a Math Magician? Subtraction (Oswego)

Quick! Use your knowledge of subtraction facts and correctly answer as many equations as you can!

### Busy Bees (Harcourt)

Buzz with the busy bees who need your subtraction skills to find out how many are in the hive.

It's time to add it up! Read the word problems then add the three numbers to find the sum.

### Addition and Subtraction Word Problems (Math Playground)

Become a master wizard of addition and subtraction when you solve these word problems.

### Sum Sense: Single-Digit Addition (Oswego)

Your challenge is to take the numbers given and place them in the correct space for the sum!

On your mark, get set, go! The more addition problems you solve, the faster your jet ski will go!

It's a jet ski race! The more subtraction problems you get correct, the faster you go!

### Which Sign Makes the Number Sentence True? (IXL)

Choose between the number signs of ( + ) or ( - ) to make the number sentence true.

### Speed Grid Challenge Subtraction (Oswego)

Stop the clock and hear the applause when you correctly balance the subtraction equations.

### Dinosaur Dentist (ICT Games)

Help the dinosaur get rid of her toothache by solving the equation. Right answers make her dance!

### Lunar Landing

Land the spaceship on the correct sum. Don't let the spaceship land too quickly or you will crash!

### Ace of Numbers (Fuel the Brain)

Use the deck of cards to find the missing number in the equation before time runs out.

Be a math superhero when you break apart the numbers to equal ten and solve the addition problem.

### Alien Attack

Blast your way through an alien attack by correctly typing in the sum or difference.

### Arithmetic Four (Shodor)

Beat the clock when you play virtual Connect Four with a friend by solving these equations.

### Math Madness (Fuel the Brain)

Shoot as many hoops as you can before time runs out by choosing the right answer.

### Bug Race

Who can add whole numbers the fastest? The first bug across the finish line wins!

### Carrot Sticks

Quickly find the sum to earn as many carrots as possible.

### Are You a Math Magician? Addition (Oswego)

Are you a math magician? Use your addition skills to solve the equations before time runs out!

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