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Exploring Krypto

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    NCTM Illuminations

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Exploring Krypto

The rules of Krypto are amazingly simple—combine five numbers using the standard arithmetic operations to create a target number. Finding a solution to one of the more than 3 million possible combinations can be quite a challenge, but learners love it. This game helps to develop number sense, computational skill, and an understanding of the order of operations. Play this game online or use a deck of Krypto cards.

Quick Guide

Preparation Time:
10 to 30 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:

Age Range:
Ages 8 - 14

Resource Types:
Activity, Game, Lesson/Lesson Plan


Materials List (per group of students)


  • Mathematics
    • Algebra
      • Patterns
    • Number and Operations
      • Fractions
      • Multiples and Factors
      • Operations
    • Problem Solving
    • Reasoning and Proof

Informal Categories

  • Games


To use this activity, learners need to:

  • see
  • read
  • use mouse
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Components that are part of this resource:

Includes alignment to state and/or national standards

Common Core State Standards for Mathematics:

Includes assesments for student learning

Access Rights:

  • Free access


  • Zordak, Samuel E.


  • All Rights Reserved, National Council of Teachers of Mathematics, ©2012

Funding Source:

  • Thinkfinity/Verizon Foundation


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