Mental Math to Divide by Whole Number Powers of Ten: Bouncing Decimal Point

Five questions challenge mathematicians to divide whole numbers by powers of 10. A tool highlights how a bouncing decimal moves through the divisor. Question types include multiple choice and fill in the blank. A discussion question concludes the practice. 

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Have the link bookmarked or open on a classroom device, direct pupils to practice when they finish other tasks early 
  • Assign the link for homework, review problems and discuss question five as a class when learners return the next day
  • Give scholars the opportunity to work independently or with a partner
Classroom Considerations
  • A free Ck-12 account is required to access the interactive 
  • Participants should have knowledge of division, decimals, and powers of 10
  • Problems are easy to read
  • Example equations are color-coded 
  • Feedback is instant 
  • None
Common Core