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Binary Numbers

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Write 1,975,206 in expanded notation.

a)

1,000,000 + 9,000,000 + 7,000 + 500 + 20 + 6

b)

1,000,000 + 9,000,000 + 70,000 + 5,000 + 200 + 60

c)

100,000 + 900,000 + 70,000 + 5,000 + 200 + 6

d)

1,000,000 + 900,000 + 70,000 + 5,000 + 200 + 6

2.
What are the only two numbers you can use in binary?
a)
0 and 1
b)
1 and 2
c)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
d)
1, 2, 4, 8, 16
3.

How would you write the number 20 in binary?

a)

00010

b)

10001

c)

10100

d)

01010

4.

What is the word 'bit' short for?

a)

Basic Intergers

b)

Binary digit

c)

Binary Tech

5.

What number system is used by almost every civilization throughout history?

a)

Decimal

b)

Hexadecimal

c)

Octal

d)

Binary

6.

15

a)

1100

b)

1101

c)

1110

d)

1111

7.

13

a)

1100

b)

1101

c)

1110

d)

1111

8.

6

a)

100

b)

101

c)

110

d)

111

9.

4

a)

100

b)

101

c)

110

d)

111

10.

2

a)

00

b)

01

c)

10

d)

11

11.

What number system do we use to count in the real world?

a)

Hexadecimal

b)

Decimal

c)

Octal

d)

Binary

12.

The binary number system uses___numbers

a)

one

b)

two

c)

three

d)

four

13.

Which represents the number 20 in binary?

a)

10100

b)

1010

c)

101

d)

101000

14.

How do you write the number 10 in binary?

a)

1010

b)

11

c)

1001

d)

1000

15.
How would you write the number 4 in binary code?
a)
0100
b)
0000
c)
0001
d)
0010
16.
Binary is made up of which numbers 
a)
3 and 4.
b)
2 and 3.
c)
1 and 2.
d)
0 and 1.
17.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
18.
What is the point of binary?
a)
It represents how computers interpret electrical signals
b)
Because we like to make you do extra maths ;-D
c)
For the lulz
d)
Because it describes star systems
19.
If a binary number ends with a 1, it must be...
a)
An odd number
b)
An even number
c)
A prime number
d)
The number 12
20.

Express 15.125 in binary notation

(a)