Worksheetsmaths
Total questions: 13
Worksheet time: 12mins
Name
Class
Date
1.
i=−1
a)
True
b)
False
2.
−4i⋅5i
(a)
3.
3i+5i+2i+10
a)
10
b)
10i+10
c)
10i
d)
100i
4.
How do you write a complex number?
a)
a-bi
b)
a+bi
c)
ai+b
d)
ai-b
5.
What does i2 = ?
a)
-1
b)
√-1
c)
1
d)
-√1
6.
-6i+3i
a)
3i
b)
-3i
c)
-2i
d)
-3i2
7.
3i + 2i
a)
5i
b)
5i2
c)
6i
d)
-5
8.
What letter represents an imaginary number?
a)
a
b)
i
c)
j
d)
x
9.
(4 - 2i) - (3 + 6i)
a)
7 - 4i
b)
1 + 4i
c)
1 - 8i
d)
7 - 8i
10.
(3 + 2i) + (4 - 5i)
a)
7 + 7i
b)
1 - 3i
c)
1 - 7i
d)
7 - 3i
11.
4i(−2−8i)
(a)
12.
a)
10
b)
-10
c)
10i
d)
-10i
13.
3+3i+8−2i−7
(a)
100 %