WorksheetsBasic Complex Number
Total questions: 17
Worksheet time: 17mins
Name
Class
Date
1.
i2
a)
-1
b)
1
c)
i
d)
-i
2.
i21
a)
-1
b)
1
c)
i
d)
-i
3.
a)
10
b)
-10
c)
10i
d)
-10i
4.
(3 + 2i) + (4 - 5i)
a)
7 + 7i
b)
1 - 3i
c)
1 - 7i
d)
7 - 3i
5.
(4 - 2i) - (3 + 6i)
a)
7 - 4i
b)
1 + 4i
c)
1 - 8i
d)
7 - 8i
6.
What does i2 equal?
a)
-1
b)
√-1
c)
1
d)
-√1
7.
What letter represents an imaginary number?
a)
a
b)
i
c)
j
d)
x
8.
(2i)(3i)
a)
5i
b)
-5
c)
6i
d)
-6
9.
How do you write a complex number?
a)
a-bi
b)
a+bi
c)
ai+b
d)
ai-b
10.
i=−1
a)
True
b)
False
11.
Given the following Complex Number, identify the IMAGINARY part:
7−8i
a)
Imaginary Part is 7
b)
Imaginary Part is -7
c)
Imaginary Part is -8i
d)
Imaginary Part is 8i
12.
Given the following Complex Number, identify the REAL part:
37i
a)
Real Part is 37
b)
Real Part is -37
c)
Real Part is 0
13.
What is the complex conjugate of 4-3i?
a)
A. 1/(4-3i)
b)
B. 1/(4+3i)
c)
C. -4 + 3i
d)
D. 4 + 3i
14.
The real part in the complex number 7i−2 is ...................
a)
7
b)
7i
c)
2
d)
−2
15.
i52
a)
i
b)
-i
c)
1
d)
-1
16.
3i + 2i
a)
5i
b)
5i2
c)
6i
d)
-5
17.
Simplify:
(10+ 15i) - (48 - 30i)
(10+ 15i) - (48 - 30i)
a)
58 - 45i
b)
58 - 15i
c)
-38 - 15i
d)
-38 + 45i
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