wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Complex Numbers

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

Add. (3 + 2i) + (4-5i)

a)

7 - 3i

b)

7 + 7i

c)

1 - 3i

d)

1 - 7i

2.

Add. (-7 + 9i) + (2 - 10i)

a)

-5 + i

b)

-9 + i

c)

-5 - i

d)

9 - i

3.

Subtract. (4 - 7i) - (-3 + 6i)

a)

7 - 13i

b)

7 - i

c)

1 - 13i

d)

1 - i

4.

i15=i^{15}=  

a)

-1

b)

i

c)

1

d)

-i

5.

i79

a)

i

b)

1

c)

-1

d)

-i

6.

If z=√2+√2 i then arg(z2)=

a)

0o

b)

60o

c)

90o

d)

Not Possible

7.

Lisa wants to buy two new dresses from the mall. If one dress costs (59 - 6i) and the other costs (34 + 17i), how much money will she need to bring to the mall?

a)

82 dollars

b)

93 + 11i dollars

c)

93 - 23i dollars

d)

25 - 23i dollars

8.

3+√-4

a)

1

b)

3-2i

c)

5

d)

3+2i

9.

(7 + 3i)  (18i)\left(7\ +\ 3i\right)\ -\ \left(1-8i\right)  

a)

6 + 11i

b)

6 - 5i

c)

6+11i26+11i^2  

d)

-5

10.

Use the Discriminant to determine the type of solutions: -3x^2+7x-1=0

a)

real

b)

2 real

c)

2 imaginary

d)

3 real

11.

a)

A

b)

B

c)

C

d)

D

12.

a)

A

b)

B

c)

C

d)

D

13.

a)

A

b)

B

c)

C

d)

D

14.

a)

A

b)

B

c)

C

d)

D

15.

a)

A

b)

B

c)

C

d)

D

e)

E

16.

a)

A

b)

B

c)

C

d)

D

e)

E

17.

a)

A

b)

B

c)

C

d)

D

e)

E

18.

a)

A

b)

B

c)

C

d)

D

e)

E

19.

a)

A

b)

B

c)

C

d)

D

e)

E

20.

a)

A

b)

B

c)

C

d)

D

e)

E