💬 Complex Numbers: Mixed Practice & Reasoning (N-CN.A.2)

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Add, subtract and multiply complex numbers. Read each problem. Draw or write to solve. Label your answer.

1. (5 − 7i) + (5 + 8i)

Work

Answer: ______________

2. (-5 + 2i)(-3 − 3i)

Work

Answer: ______________

3. (0 − 5i) + (5 − 4i)

Work

Answer: ______________

4. (0i)(-6 − 6i)

Work

Answer: ______________

5. (-7 − 3i) + (-1 − 2i)

Work

Answer: ______________

6. (-4 + 2i)(-1 − 4i)

Work

Answer: ______________

Answer key: 1) 10 + i · 2) 21 + 9i · 3) 5 − 9i · 4) 0i · 5) -8 − 5i · 6) 12 + 14i

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Worksheets › Grade 11 Math (Algebra II) › Complex Numbers › Complex Numbers

Grade 11 (ages 16–17)Numbers & mathsFree printable PDF

About this grade 11 worksheet

Free Grade 11 Algebra II math worksheet (Common Core N-CN.A.2): complex numbers — mixed practice with space to reason and check, with answer key. Skill: Add, subtract and multiply complex numbers. Level: Grade 11 — also suits Year 12 (UK).

For teachers: skills & standards

CCSS N-CN.A.2: Add, subtract and multiply complex numbers
Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

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What age is it for?

It is designed for Grade 11 (ages 16–17), but use it with any child who is ready.

What skills does it build?

Add, subtract and multiply complex numbers.

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More “Complex Numbers” printables (n-cn.a.2: add, subtract and multiply complex numbers)

Complex Numbers: Practice A (N-CN.A.2) · Complex Numbers: Practice B (N-CN.A.2) · Complex Numbers: Show Your Thinking (N-CN.A.2) · Complex Numbers: Quick Check (N-CN.A.2)

All 5 complex numbers sheets → · Grade 11 Math (Algebra II): all 10 skills → · All Common Core grades

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