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Lesson Plan

Converting Rational Numbers to Decimals Using Long Division

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This Converting Rational Numbers to Decimals Using Long Division lesson plan also includes:

Convert fractions that cannot be written with a denominator that is a power of 10. Pupils use the definition of a fraction and long division to convert fractions to decimals, then discover that some divisions terminate and others continue indefinitely. The 14th installment of a 22-part series demonstrates the notation used for repeating decimals.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Look for patterns of the decimal based on the denominator
  • Lead a discussion about whether one can check a division that ends up as a repeating decimal by multiplication
Classroom Considerations
  • Pupils can use a calculator to divide, just be cautious about how the calculator displays the repeating decimals
Pros
  • Shows the long division for the example problems
  • The problem set contains enrichment items
Cons
  • None
Common Core