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.

Concepts

complex numbers, logarithmic equations

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Additional Tags

math

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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

HSA-SSE.A.2 MP7