Computations with Complex Numbers

This Computations with Complex Numbers activity & project also includes:

This quick set of problems provides a brief refresher on the arithmetic of complex numbers. Learners need to multiply, add and subtract, and remember features of i when raised to a power. Included solutions are clear enough that learners could correct and improve their own work with the solution guide.

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CCSS: Designed
Instructional Ideas

  • Warm-up problems for the start of class
Classroom Considerations

  • Learners who remember the tricks of complex numbers will finish much more quickly than those doing long multiplication
Pros

  • Straightforward problems without extra information
  • Hits all major complex number arithmetic skills
Cons

  • No new learning or synthesis required
  • Small portion of the right margin appears to be cut off
Common Core