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Intro to complex numbers

Intro to complex numbers

Assessment

Presentation

Mathematics

9th - 12th Grade

Medium

CCSS
HSN.CN.A.2, HSN.CN.B.4, HSN.CN.A.1

Standards-aligned

Created by

Jesus Molina

Used 8+ times

FREE Resource

4 Slides • 12 Questions

1

Intro to complex numbers

by Jesus Molina

2

3

Multiple Choice

Question image

What complex number is shown on the graph?

1

(-2,-3)

2

-2-3i

3

2-3i

4

3i-2

4

Multiple Choice

Question image

Match the expression to the graph shown in the complex plane.

1

-2i-3i

2

(0,-5)

3

-6i

4

-2(3i)

5

Multiple Choice

Question image
What complex number is represented by the graph?
1
-3-i
2
-3+i
3
1+3i
4
1-3i

6

Multiple Choice

A complex number can be expressed as a + bi. What does a represent?

1

the real part of the complex number

2

the imaginary part of the complex number

3

depends on the sign of the number

4

the square root of the complex number

7

8

media

9

Multiple Choice

What does i2 = ?
1
-1
2
√-1
3
1
4
-√1

10

Multiple Choice

Simplify   i23
1
i
2
-1
3
1
4
-i

11

Multiple Choice

Multiply
(2i)(3i)
1
5i
2
-5
3
6i
4
-6

12

Multiple Choice

i13
1
-1
2
1
3
i
4
-i

13

Multiple Choice

i7
1
i
2
-i
3
1
4
-1

14

Multiple Choice

Add/Subtract using the proper rules:
2i + 3 + 7 - 12 i
1
10i - 10
2
-10i + 10
3
14i + 10
4
-10i + 4

15

Multiple Choice

i52
1
i
2
-i
3
1
4
-1

16

Multiple Choice

Calculate: 
(1 − 2i) + (-4 + 2i)
1
-3
2
-3 − 4i
3
5 − 4i
4
5

Intro to complex numbers

by Jesus Molina

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