2023-24 - Y8 - Data Representation EOU Assessment

Which of these numbers completes the binary place value table shown?

• 6
• 8
• 10
• 12

Select the correct option to complete the following sentence:

The decimal number system is known as base 10 as it uses the digits ___.

• 1-9
• 1-10
• 0-9
• 0-10

Select the correct option to complete the following sentence:

Binary is a number system that uses the digits 0 and ___.

• 1
• 2
• 10
• 16

Select the correct option to complete the following sentence:

The hexadecimal number system is known as base ____ as it uses the digits 0-9 and A-F.

• 2
• 8
• 10
• 16

Select the correct options to complete the following sentence:

Computers use the (1)__________ number system as they are electronic systems which use tiny switches called transistors to allow electricity to be on or off in their circuits. Therefore to represent data and the two states on and off, 1 is used for (2)__________ and 0 is used for (3)__________.

• (1) decimal

  (2) on

  (3) off

• (1) binary

  (2) off

  (3) on

• (1) hexadecimal

  (2) true

  (3) false

• (1) binary

  (2) on

  (3) off

Using the binary place value table, convert the binary number 110101 to decimal.

• 53
• 55
• 57
• 59

Using the binary place value table, convert the decimal number 176 to binary.

• 10110010
• 10110000
• 10111000
• 10111010

Hexadecimal is often used instead of binary by programmers.

Complete the following statement by selecting either binary or hexadecimal.

1. __________ produces long strings of digits and can be difficult to work with.

• Binary
• Hexadecimal

Hexadecimal is often used instead of binary by programmers.

Complete the following statement by selecting either binary or hexadecimal.

2. __________ can be easily converted to and from binary.

• Binary
• Hexadecimal

Hexadecimal is often used instead of binary by programmers.

Complete the following statement by selecting either binary or hexadecimal.

3. Using __________ means it is more likely to cause typing errors.

• Binary
• Hexadecimal