How to Convert From Hexadecimal to Decimal

The video tutorial explains how to convert a hexadecimal number to a decimal number, using the example of converting #5E. It begins by converting each hexadecimal digit to binary, then combines these binary digits into a single byte. The binary byte is then converted to a decimal number by adding the values of the binary digits. The tutorial emphasizes the importance of showing calculations in exams to earn marks, even if the final answer is incorrect.

What is the first step in converting a hexadecimal number to decimal?

• Convert the hexadecimal number to a fraction

• Convert the hexadecimal number to decimal directly

• Convert the hexadecimal number to binary

• Convert the hexadecimal number to octal

How is the hexadecimal digit 5 represented in binary?

• 1001

• 0101

• 1100

• 1010

What is the value of the hexadecimal digit E in decimal?

• 13

• 12

• 14

• 15

Which binary digits add up to represent the decimal value of E?

• 8, 4, and 2

• 8, 2, and 1

• 4, 2, and 1

• 8, 4, and 1

What is the binary representation of the hexadecimal number 5E?

• 11011100

• 11101010

• 10101110

• 01011110

What is the decimal equivalent of the binary number 01011110?

• 96

• 94

• 92

• 98

Why is it important to show your working out in an exam?

• To fill up the answer sheet

• To make the exam paper look neat

• To confuse the examiner

• To get partial credit even if the final answer is wrong