Starter quiz
- What is the binary number system based on?
- base-10
- base-2 ✓
- base-8
- base-16
-
- Which number system uses the digits 0 to 9?
- binary
- hexadecimal
- decimal ✓
- octal
-
- What is the name of the electronic switch used in computing?
- 'transistor' ✓
- In ascending order, give the results of the rules of binary addition: 0 + 0, 0 + 1, 1 + 1, 1 + 1 + 1.
- 1⇔00
- 2⇔01
- 3⇔10
- 4⇔11
- What happens when you shift a binary number to the left?
- It divides the number by a power of 2.
- It adds 1 to the number.
- It subtracts 1 from the number.
- It multiplies the number by a power of 2. ✓
-
- In binary, what is 110 multiplied by 1000?
- '110000' ✓
Exit quiz
- What is the name of the base-16 number system?
- 'hexadecimal' ✓
- What value is missing from these hexadecimal values? 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
- '0' ✓
- Match these number bases with their correct definition:
- hexadecimal⇔a base-16 numbering system that uses the values 0 to 9 and A to F ✓
- binary⇔a base-2 numbering system that uses the digits 0 and 1 ✓
- decimal⇔a base-10 numbering system that uses the digits 0 to 9 ✓
- Why do humans use hexadecimal instead of binary?
- It's faster.
- It takes up less memory.
- It's easier for humans to read and interpret. ✓
- It uses more digits.
-
- Which of the following is NOT a value used in hexadecimal?
- 9
- A
- F
- G ✓
-
- What is the hexadecimal equivalent of the binary number 1010?
- A ✓
- B
- C
- D
-
Worksheet
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Video
Lesson Details
Key learning points
- Hexadecimal is often used by humans instead of binary because it is easier to read and interpret and uses fewer digits.
- Hexadecimal is a base-16 number system.
- The digits used for hexadecimal are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F.
Common misconception
Hexadecimal numbers are used to take up less memory on the computer.
Computers still only process and store binary data. Hexadecimal is used by humans to help them process long binary sequences more easily but the underlying number of bits is still the same.
Keywords
Hexadecimal - a base-16 number system that uses the digits 0-9 and the letters A, B, C, D, E and F
Base-16 - a number system that uses 16 digits
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