Single Digit Addition Game
 
When we add numbers, the order does not matter. Whichever order we add, we will get the same answer. This means that we can use some strategies to make the addition of three or more single digit numbers easier and faster.
 
This Single Digit Addition game is an interactive tool designed to help you practice and master the math strategies when adding three or more single digit numbers together. This mastery will also be useful when adding multi-digit numbers since we usually add numbers in columns of single digits and then carry or regroup when necessary.
 

 

How to play the Single Digit Addition Game

1. How many Numbers to Add: Key in how many numbers you want to add and click “Start Game”
   
2. Look at the Problem: You’ll see numbers at the top of the purple box. Your goal is to add them together. Try to use the mental math strategies given below.
   
3. Enter Your Answer: Type the sum of the numbers into the box with the question mark ?.
   
4. Check Your Work: Click the Check button (or press the Enter key). The game will tell you if you’re correct. If you are wrong, you will be shown the correct answer.
   
5. Get a New Problem: Click the Next button (or press Enter again) for a new addition problem.
   Your score is tracked at the top, showing how many you’ve gotten right out of the total you’ve tried.
6. New Game: Click “New Game” to go back to the Start screen.
    
   

Useful strategies:

1. Making Tens
   Look for pairs of numbers that add up to 10. Once you find a 10, it’s easy to add the remaining numbers.
   Example: To solve 4+7+6, you can see that 4+6 makes 10. Then, you just have to add 10+7 to get 17.
   
2. Using Doubles
   If you see two of the same number in the problem, you can use your knowledge of doubles facts.
   Example: For 3+8+3, you can quickly calculate the double, 3+3=6. The problem then becomes 6+8, which is 14.
   
3. Adding in Pairs
   Even if you don’t find a 10 or a double, you can group the numbers in a way that makes the mental calculation easier.
    
   The key is to train your brain to quickly spot these combinations. The more you practice, the more these strategies will become second nature, and you’ll be able to solve the problems in the game even faster!
    
   This video explains a few more mental math tricks to use when adding multiple numbers.
   • Show Video
   
    
   

Free Addition Games
One More, One Less	1-Digit Addition	Addition (Maximum Sum)
Add Doubles	Number Bonds (Missing Addend)	Add 3 or more single digits
Fixed Addend	Understand the Equal Sign	Fact Families Game
2-digit + 1-Digit (no regrouping)	2-Digit + 2-Digit (no regrouping)	Add Multiples of 10
2-digit + 1-digit Column Addition	2-digit Column Addition
3-digit + 2-digit Column Addition	3-digit Column Addition
2-digit + 1-digit (with regrouping)	2-Digit + 2-Digit (with regrouping)	3-Digit Addition

 

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