Imaginary Numbers Quiz

Authored by Rachel Leatham

Mathematics

9th - 12th Grade

CCSS covered

Used 1+ times

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10 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is $\sqrt{-1}$ ?

$i$

$-1$

$-i$

$1$

Tags

CCSS.HSN.CN.A.1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is $i^2$ ?

$i$

$-1$

$-i$

$1$

Tags

CCSS.HSN.CN.A.1

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Simplify $\sqrt{-81}$

-√81

-9i

81i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

CCSS.HSN.RN.A.2

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Simplify $\sqrt{-4}$

-2i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$5i\cdot2i$

$10$

$10i^2$

$-10$

$10i$

Tags

CCSS.HSN.CN.A.2

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

x² = -36

x = ±6

x = 6i

x = -6

x = ±6i

Tags

CCSS.8.EE.A.2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is $i^4$ ?

$i$

$-1$

$-i$

$1$

Tags

CCSS.HSN.CN.A.2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify $\left(7i\right)^2$

$7i$

$49i$

$-49i$

$-49$

Tags

CCSS.HSN.CN.C.8

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Imaginary Numbers

What is $\sqrt{-1}$ ?

What is $i^2$ ?

Simplify $\sqrt{-81}$

Simplify $\sqrt{-4}$

$5i\cdot2i$

x² = -36

What is $i^4$ ?

Simplify $\left(7i\right)^2$

Simplify: i + 6i

Simplify:
1 − 2i − 4 + 3i

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Imaginary Numbers

What is −1\sqrt{-1}−1​ ?

What is i2i^2i2 ?

Simplify −81\sqrt{-81}−81​

Simplify −4\sqrt{-4}−4​

5i⋅2i5i\cdot2i5i⋅2i

x2 = -36

What is i4i^4i4 ?

Simplify (7i)2\left(7i\right)^2(7i)2

Simplify: i + 6i

Simplify: 1 − 2i − 4 + 3i

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

What is $\sqrt{-1}$ ?

What is $i^2$ ?

Simplify $\sqrt{-81}$

Simplify $\sqrt{-4}$

$5i\cdot2i$

x² = -36

What is $i^4$ ?

Simplify $\left(7i\right)^2$

Simplify:
1 − 2i − 4 + 3i