Students 9-14 years old compete for $10,000! Champion’s teacher receives $2,000!

Learn how to play Number Knockout. Below is what you need to know to get started with friend and family.

Basic Game Play

National Number Knockout is played on a six by six grid of numbers. The classic N2K board contains the numbers 1 to 36, but the board can contain any variation of 36 numbers. Three dice are rolled. The student must incorporate all three numbers that are rolled, employing addition, subtraction, multiplication, division, roots, and exponents, in such a way that the result is a number on the board. All three numbers must be used once, but cannot be used more than once. If more than one numeral one is rolled, the student is given an automatic re-roll. As the student generates equations to solve for each number, they cross the number off of the board. Students are given sixty seconds to generate as many equations as possible with unique answers.

To see some example bouts watch¬†“How to Play” playlist on Youtube

Essential Rules

    Here are some essential N2K rules:

  1. National Number Knockout is a mental math game, so try to make your calculations in your head! Students may write their equations down, but their writing has no bearing on their score.
  2. Each round is 60 seconds.
  3. The clock starts immediately after the dice are rolled.
  4. Students must state the rolled numbers immediately after the dice are rolled.
  5. If more than one “1” is rolled the student is allowed an automatic re-roll.
  6. Exponents may be any number; you aren’t limited to using only the rolled numbers as your exponents.
  7. Only one exponent can be applied to each number, and exponents cannot be applied to a combination of numbers.

If you want to learn all the  National Number Knockout rules, download the
Official Rulebook hereClassic.jpghere
Print off the Classic National Number Knockout Game Board

Start a Club

To help your students play their best, we recommend that you help your students start an N2K club with their friends and classmates. Playing together is the best way to improve their arithmetic abilities.

  • Read through the Essential Rules above and watch how-to videos on our Youtube channel.
  • Practice playing together in the car, after class, and as a warm-up before diving into math lessons.
  • Start a club that meets regularly and schedule a tournament to identify your fastest, most accurate contender.
  • Get Quick Flip Arithmetic for more games and new ways to play Number Knockout with your club’s members.
  • Be creative! If the members enjoy the simpler versions of the game, make it more competitive. Encourage students to create their own boards and using special rolls and rules.
  • Have the club members vote for the best players they think should register for the National Number Knockout Championship.