Year 7 Data Representation Assessment Revision

What is meant by a bit?

• A normal number like 5

• A character on the keyboard like the letter H

• 1 or 0. A single binary digit

• Tiny squares that makes up an image

How many bits are there in a byte?

• 8

• 4

• 7

• 16

Convert the following 8-bit binary value into their denary (base 10) equivalent.

• 50

• 10

• 76

• 55

Convert the following 8-bit binary value into their denary (base 10) equivalent.

• 175

• 100

• 176

• 155

Convert the following 8-bit binary value into their denary (base 10) equivalent.

• 200

• 214

• 176

• 255

Convert the 31 into their binary (base 2) equivalent.

• 0000 0000

• 1111 0000

• 0001 1111

• 1001 0000

Convert the 104 into their binary (base 2) equivalent.

• 0000 0000

• 0110 1000

• 1110 0001

• 1001 0000

Convert the 210 into their binary (base 2) equivalent.

• 1101 0010

• 0110 1000

• 1110 0001

• 1001 0000

Add the following two 8-bit binary values.

• 0100 1100

• 0110 1000

• 1110 0001

• 1100 0011

Add the following two 8-bit binary values.

• 1 0110 1011

• 1 0110 1000

• 1 1110 0001

• 1 1100 0011