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Worksheets

Year 7 representation

Total questions: 12

Worksheet time: 13mins

Name
Class
Date
1.

What is the most appropriate definition for a character set?

a)

a list of special characters

b)

a compatible, unique list of characters used by computers

c)

different tables of different characters

d)

a non - compatible, unique list of characters used by computers

2.

what is the binary value of 10000101

a)

133

b)

132

c)

111

d)

123

3.

What is 45 in binary?

a)

01001111

b)

00100011

c)

00101101

d)

01000011

4.

What is 120 in binary

a)

01111000

b)

00111100

c)

10111001

d)

01110001

5.

1800 bytes equal?

a)

18 MB

b)

1.8 MB

c)

18 KB

d)

1.8 KB

6.

What base system does binary use?

a)

16-base

b)

10-base

c)

2-base

d)

1-base

7.

What does the ASCII Character set do?

a)

It represents 128 English characters as numbers

b)

It is a non-compatible character set

c)

It converts numbers for you

d)

It changes numbers into letters online

8.

In ASCII , a capital A is 67 in denary. A capital C is 69. Select the correct answer below for B.

a)

1000100

b)

1111110

c)

0001111

9.

How many bits are required to represent 15 in binary?

a)

2

b)

3

c)

4

d)

5

10.

Type in the size of this file in bytes

(a)  

11.

Black is 0 and white is 1

which is correct code below for the bottom line of the image?

a)

00111100

b)

00110011

c)

11100000

d)

11000011

12.

Type in how many 100kb will fit into a mb?

(a)