plumiStoring numbers: binary, hexadecimal and shifts: OCR GCSE Computer Science questions
Every OCR GCSE Computer Science exam question on 1.2.4a Storing numbers: binary, hexadecimal and shifts, 2022–2025, with its mark scheme and examiner’s report.
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Calculations
Q5(b)
The whole paper ↗Q5(c)
The whole paper ↗Q5(d)
The whole paper ↗Q5(e)
The whole paper ↗Q1(a)
The whole paper ↗Q1(b)
The whole paper ↗Q1(c)
The whole paper ↗Q1(d)
The whole paper ↗Q1(e)
The whole paper ↗Q1(b)
The whole paper ↗Q1(e)
The whole paper ↗Q1(f)
The whole paper ↗Q1(b)
The whole paper ↗Q1(c)
The whole paper ↗Q1(d)
The whole paper ↗Q1(e)
The whole paper ↗Q1(f)
The whole paper ↗Q5(a)
The whole paper ↗Q5(b)
The whole paper ↗Q5(c)
The whole paper ↗
All 20 questions on Storing numbers: binary, hexadecimal and shifts, as a list
- June 2025, Paper 1, Q5(b) (4 marks): Each row in the table contains a number that is written as a denary value, 8-bit binary value and a 2-digit hexadecimal value. Some values are missing. Complete
- June 2025, Paper 1, Q5(c) (2 marks): Complete the binary addition of these two 8-bit binary numbers. Show your working out. 0 1 1 1 0 0 1 1 + 0 0 1 1 0 1 0 0 [2]
- June 2025, Paper 1, Q5(d) (1 mark): Tick (✓) one box to identify the result of a 2-place right binary shift on the binary number 01110111. 00011101 11101110 00111011 11011100 [1]
- June 2025, Paper 1, Q5(e) (2 marks): Describe the binary shift that can be used to multiply any number by 8. [2]
- June 2024, Paper 1, Q1(a) (3 marks): The following table has either the binary or denary value of 3 numbers. Complete the table by converting the 8-bit binary number into denary and the denary numb
- June 2024, Paper 1, Q1(b) (4 marks): Complete the table by writing the answer to each statement. Statement Answer The smallest denary number that can be represented by a 4-bit binary number The lar
- June 2024, Paper 1, Q1(c) (1 mark): Show the result of a left binary shift of 4 places on the binary number 00001111. [1]
- June 2024, Paper 1, Q1(d) (3 marks): Describe how to convert a 2-digit hexadecimal number into denary. Use an example in your answer. [3]
- June 2024, Paper 1, Q1(e) (2 marks): Add these two 8-bit binary numbers using binary addition. Show your working out. 0 1 1 0 1 0 1 1 + 0 0 0 0 1 1 1 1 [2]
- June 2023, Paper 1, Q1(b) (4 marks): Complete the table by writing the missing denary, 8-bit binary or hexadecimal values. Denary 8-bit binary Hexadecimal 00000111 7 49 31 01100110 66 244 11110100
- June 2023, Paper 1, Q1(e) (2 marks): Complete the binary addition by adding these two 8-bit binary numbers. Show all your working. 0 1 1 1 0 0 0 1 + 1 0 0 1 1 1 1 0 [2]
- June 2023, Paper 1, Q1(f) (2 marks): Identify the binary shift that has been applied to the 8-bit binary number 10110000 to get the result 10000000. [2]
- June 2022, Paper 1, Q1(b) (2 marks): Convert the denary number 221 into 8 bit binary. Show your working. [2]
- June 2022, Paper 1, Q1(c) (2 marks): Convert the hexadecimal number 2F into denary. Show your working. [2]
- June 2022, Paper 1, Q1(d) (1 mark): Convert the binary number 10110000 into hexadecimal. [1]
- June 2022, Paper 1, Q1(e) (1 mark): Identify how many unique values can be represented by 4 bits. [1]
- June 2022, Paper 1, Q1(f) (1 mark): Perform a binary shift of 3 places right on the binary number 10001110. [1]
- Specimen, Paper 1, Q5(a) (1 mark): Convert the binary number 11001011 into denary. ………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………... [1]
- Specimen, Paper 1, Q5(b) (1 mark): Complete a 2-place shift to the right on the binary number 11001011. ……………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. [1
- Specimen, Paper 1, Q5(c) (2 marks): Explain the effect of performing a 2-place shift to the right on the binary number 11001011. ……………………………………………………………………………………………………………….… …………………………………………………………
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