Addition and Subtraction of Rational Numbers

Apply adding and subtracting integers to solving problems with rational numbers. Pupils use the rules for adding and subtracting integers to adding and subtracting rational numbers. Class members represent the problem with equations and number lines to find the sums and differences. 

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CCSS: Designed
Instructional Ideas

  • Provide some basic addition and subtraction problems that do not have context
Classroom Considerations

  • The lesson goes beyond the standard on subtraction but also includes addition
  • Class should be comfortable adding and subtracting fractions and decimals
  • The lesson is the 7th installment in a 25-part series
Pros

  • Answer keys show the equation and the number line models for the problem set
  • Includes hints to aid individuals with their work
Cons

  • None
Common Core