Add Doubles or Near Doubles Game
 
The Add Doubles Game is an interactive and engaging web-based application designed to help users, especially those learning basic arithmetic, practice and improve their 1-digit addition skills through mental math. Knowing your “doubles” (like 4 + 4 = 8) can help you quickly solve related problems (like 4 + 5 = 9).
 
In this game, you will add two numbers that are doubles or near doubles. If you give a wrong answer, the game will give you the correct solution.
 

Doubles & Near Doubles

Practice your addition facts.

Problem Type: Doubles Only Near Doubles Only Random Mix

Enable 60-Second Timer

Start Game

Score: 0 / 0

Time: 60

Check Next

Back to Menu

 

How to Play the Add Doubles Game
Here’s how to play:

1. Problem Type; Select one from “Add Doubles Only”, “Add Near Doubles Only”, or “Random Mix”.
   
2. Look at the Problem: You’ll see two numbers. Your goal is to add them together.
   
3. Enter Your Answer: Type your answer 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 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.
    
   

Strategies for Mental 1-Digit Addition
Learning to add in your head is a powerful skill that can make math much faster and more intuitive. Instead of counting on your fingers, you’ll learn to see the relationships between numbers to quickly find the answer.
 

1. The “Count On” Method
   This is a good first step away from simple counting. To solve a problem like 7 + 2, you start with the bigger number and count on the smaller number.
   Example: 7 + 2
   Start with 7 in your head.
   Count on two more: 8, 9.
   The answer is 9.
   This method is most effective when adding a small number, like 1, 2, or 3.
   
   
2. The “Making 10” Strategy
   This is one of the most important mental math tricks. Our number system is based on 10, so getting to 10 makes problems much easier. To add two numbers that sum to more than 10, you break one of the numbers apart to “make a 10” with the other.
   Example: 8 + 5
   You want to make the 8 a 10. You know you need 2 more (8 + 2 = 10).
   Break the 5 into 2 and 3.
   Now, the problem becomes (8 + 2) + 3.
   Since 8 + 2 is 10, the problem is simply 10 + 3.
   The answer is 13.
   
   
3. Doubles and Near Doubles
   Knowing your “doubles” (like 3 + 3 = 6 and 5 + 5 = 10) can help you quickly solve related problems.
   Example: 4 + 5
   You know that 4 + 4 = 8.
   Since 5 is just one more than 4, the answer to 4 + 5 must be one more than 8.
   The answer is 9.
    
   

By practicing these strategies, you will build the “number sense” that allows you to solve problems quickly in your head. The addition game is a great place to practice these mental tricks until they become second nature.
 

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
2-Digit + 1-Digit (no regrouping)	2-Digit + 1-Digit (with regrouping)	Add Multiples of 10
2-Digit + 2-Digit (no regrouping)	2-Digit + 2-Digit (with regrouping)	3-Digit Addition

 

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.