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Baldi's Math Quiz: 20. i Summary

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What is the result of adding 3 + 4i and 2 - 5i?

a)

5 - i

b)

1 - 9i

c)

7 - i

d)

5 + i

2.

What is the quotient when (3 + 2i) is divided by (1 - i)?

a)

5 - 2i

b)

2 + i

c)

4 - 3i

d)

1 + i

3.

What is the difference between (5 + 3i) and (2 - 4i)?

a)

3 + 7i

b)

8 - i

c)

6 + 2i

d)

1 - 7i

4.

What is the product of (2 + 3i) and (4 - 2i)?

a)

10 - 5i

b)

6 + 5i

c)

14 + 8i

d)

12 + 6i

5.

Find the norm of the complex number 4 + 3i.

a)

5

b)

10

c)

3

d)

7

6.

What is the result of adding 1 + 2i and 3 - 4i?

a)

5 - 6i

b)

2 - 6i

c)

4 - 2i

d)

4 + 2i

7.

What is the quotient when (2 + 5i) is divided by (1 + i)?

a)

1 + 4i

b)

2 + 3i

c)

4 + 3i

d)

3 + 2i

8.

What is the difference between (7 + 2i) and (3 - 6i)?

a)

5 + 3i

b)

4 + 8i

c)

10 - 4i

d)

2 - 9i

9.

What is the product of (1 + 4i) and (2 - 3i)?

a)

6 + i

b)

10 - 7i

c)

3 + 2i

d)

14 + 5i

10.

Find the norm of the complex number 5 - 2i.

a)

√(5^2 - (-2)^2) = √(25 - 4) = √21

b)

√(5^2 + (-2)^2) = √(25 + 4) = 29

c)

√(5^2 - (-2)^2) = √(25 - 4) = 21

d)

√(5^2 + (-2)^2) = √(25 + 4) = √29

11.

What is the sum of (3 + 2i) and (1 + 4i)?

a)

4 + 6i

b)

2 + 3i

c)

5 + 7i

d)

3 + 2i

12.

What is the sum of (5 + 3i) and (2 - 4i)?

a)

7 - i

b)

3 - i

c)

8 + 2i

d)

7 + i

13.

Find the norm of the complex number 3 + 4i.

a)

5

b)

7

c)

4

d)

6

14.

What is the product of (3 + 2i) and (1 - 4i)?

a)

11 - 10i

b)

5 + 8i

c)

7 - 6i

d)

9 + 12i

15.

What is the result of adding 3 + 4i and 5 - 6i?

a)

8 - 2i

b)

2 - 2i

c)

8 + 2i

d)

2 + 2i

16.

What is the product when (2 + 3i) is multiplied by (1 + 2i)?

a)

4 + 7i

b)

-4 + 7i

c)

4 - 7i

d)

-4 - 7i

17.

What is the result of subtracting 2 - 3i from 4 + 5i?

a)

2 + 8i

b)

6 + 2i

c)

2 + 2i

d)

6 + 8i

18.

What is the result of subtracting 2 + 3i from 4 - 5i?

a)

2 - 8i

b)

6 - 2i

c)

2 - 2i

d)

6 - 8i

19.

What is the product of (2 + 5i) and (3 - 4i)?

a)

26 + 7i

b)

14 - 11i

c)

6 + 23i

d)

23 + 6i

20.

Find the norm of the complex number 3 + 4i.

a)

√(3^2 + 4^2) = √(9 + 16) = √25

b)

√(3^2 - 4^2) = √(9 - 16) = √-7

c)

√(3^2 + 4^2) = √(9 + 16) = 25

d)

√(3^2 - 4^2) = √(9 - 16) = -7