Resources and Tools for Elementary Math Specialists and Teachers
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Broken Calculator

This interactive applet helps students develop fluency and flexibility with numbers. At each of 6 difficulty levels the user is presented with 8 target numbers and a partial set of keys on a basic calculator (does not follow order of operations). The goal is to use the given keys to make as many of the target numbers as possible within the 3-minute time limit. Some levels include memory keys.
Contributed by: Mandy Barrow - Author, Woodlands Junior School - Publisher
Math TopicNumber Sense, Basic Operations, Number Concepts, Mathematical Practices, Mathematical Processes
Grade Level3, 4, 5, 6+
Resource TypeActivity, Interactive Media

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorMandy Barrow - Author, Woodlands Junior School - Publisher
    • Publication Date2008
    • Rights(c) Mandy Barrow
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document:

  • User Comments
    • 5
      Very challenging
      By Uncle Bob on 03/16/2013 - 12:17
    • Even at basic levels you'll be challenged and working against the clock. Keep trying and you'll develop more strategies to deal with these defective tools. Find ways to take advantage of how a calculator works.