Sum of N

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This is a simple addition game. Select all the numbers that form the sum shown on the top center before the timer runs out.

• The timer resets each time you form the sum.
• You can make the chain of numbers that form the sum as long or as short as you want.
• Keep playing for as long as you can.

Overall

Design

Difficulty

Replay

Play Sum of N Game Online

Children and parents can play this number summing game by clicking in the window below.

Alternatively kids and adults can play this add numbers video game for free as a web application here.

Sum of N Game for Kids Video Game Play Instructions

How to Play

For the number shown from the top center by selecting numbers on the grid.

• Starting the Game
  • On the welcome screen, select Play to begin.
  • Your web browser automatically saves your high score.
• Game Controls
  • Desktop
    • With your mouse, left click to select a number.
  • Touchscreen devices
    • Tap on the numbers onscreen with your fingers to select them.
  • Controls and indicators (left to right)
    • Topmost row
      • Hamburger button: Pauses the game
      • Number to find
      • Score
    • Top center:
      • Timer bar
• Game Play
  • Basic rules
    • Select a group of numbers that would form the sum shown on the top center.
      • You must choose at least 2 numbers
        • Single numbers that form the sum shown cannot be used. They are all grayed out
      • You can select as many or as few numbers as you want.
        • For instance, if the sum is 10, you can choose 7 + 3 or 3 + 4 + 1 + 2.
        • They will all count if they form the sum.
        • Because of the way the scoring system works, it’s actually better to make longer chains of numbers.
      • You can select any of the numbers on the screen. They don’t need to be connected to one another.
    • Form the number before the timer runs out.
      • The timer bar shows how much time you’ve got left.
      • Each time you finish the sum, the timer bar fills up again.
      • If you run out of time before finishing a sum, it’s game over.
  • Scoring
    • You earn 10 points for each number you clear. The more numbers you remove to form the sum, the higher your score will be per turn.
    • Your current and best scores are shown on the game over screen.
• Target Audience
  • The game is suited for players who like number adding games.
  • The game has no adult themed content.

Like This Game? Review This Addition Practice Video Game for Young Girls & Boys

Sum of N

3 / 5 Editor

{{ reviewsOverall }} / 5 Users (3 votes)

Overall3.3

Design2.8

Fun3.6

Originality2.8

Replayability2.6

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Free Online Sum of N Video Game for Children & Adults Screenshots

Mobile Friendly Cross Browser Support

This game is rendered in mobile-friendly HTML5, so it offers cross-device gameplay. You can play it on mobile devices like Apple iPhones, Google Android powered cell phones from manufactures like Samsung, tablets like the iPad or Kindle Fire, laptops, and Windows-powered desktop computers. All game files are stored locally in your web browser cache. This game works in Apple Safari, Google Chrome, Microsoft Edge, Mozilla Firefox, Opera and other modern web browsers.