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Rounding and error intervals: OCR GCSE Maths questions

Every OCR GCSE Maths exam question on N15 Rounding and error intervals, 2017–2025, with its mark scheme and examiner’s report.

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921 questions

  1. Q6

    June 2025 · Paper 6

    4 marksN15 Rounding and error intervalsN16 Upper and lower bounds
    The whole paper ↗
    June 2025 Paper 6, question 6: A kitchen has space for a fridge. (a) The width, w, of the space is 70 cm, correct to the nearest centimetre. Complete the error interval for the width, w. (a)

  2. Q12

    June 2023 · Paper 6

    5 marksN16 Upper and lower boundsN15 Rounding and error intervals
    The whole paper ↗
    June 2023 Paper 6, question 12: A box contains 200 matches, correct to the nearest ten matches. (a) Complete the error interval for n, the number of matches in the box. (a) n G G (b) The box i

  3. Q11

    November 2022 · Paper 4

    6 marksG20 Pythagoras and trigonometryN15 Rounding and error intervals
    The whole paper ↗
    November 2022 Paper 4, question 11: The diagram shows two right-angled triangles that are joined together. All measurements are given accurate to 2 significant figures. 8.3 cm Not to scale x cm 42

  4. Q9

    November 2021 · Paper 6

    8 marksN16 Upper and lower boundsN15 Rounding and error intervals
    The whole paper ↗
    November 2021 Paper 6, question 9: The width, w, of a kitchen cupboard is 60 cm, correct to the nearest centimetre. (a) Complete the error interval for the width, w. (a) w 1 G (b) Six of these ki

  5. Q11

    November 2020 · Paper 4

    7 marksN15 Rounding and error intervalsN16 Upper and lower bounds
    The whole paper ↗
    November 2020 Paper 4, question 11: (a) The length, d, of Jamal’s car is 4.72 m, correct to 2 decimal places. Complete the error interval for the length, d. (a) d 1 G (b) Jamal travels 430 km, cor

  6. Q4

    November 2020 · Paper 6

    7 marksN14 EstimationN15 Rounding and error intervals
    The whole paper ↗
    November 2020 Paper 6, question 4: Nina estimates the value of 0 546 . 220 # (a) Show that Nina’s answer is 64. (b) Calculate the error in her estimated answer as a percentage of the exact answer

  7. Q4

    November 2018 · Paper 6

    2 marksN15 Rounding and error intervals
    The whole paper ↗
    November 2018 Paper 6, question 4: Use the symbols 1 , , , 2 , or to complete this statement. G = H If x = 4.7, truncated to 1 decimal place, then 4.7 x 4.8

  8. Q2

    June 2017 · Paper 4

    2 marksN15 Rounding and error intervals
    The whole paper ↗
    June 2017 Paper 4, question 2: The length, L, of a steel rod is 8.3 m, correct to 1 decimal place. Complete the error interval for length L. G L 1
All 8 questions on Rounding and error intervals, as a list
  1. June 2025, Paper 6, Q6 (4 marks): A kitchen has space for a fridge. (a) The width, w, of the space is 70 cm, correct to the nearest centimetre. Complete the error interval for the width, w. (a)
  2. June 2023, Paper 6, Q12 (5 marks): A box contains 200 matches, correct to the nearest ten matches. (a) Complete the error interval for n, the number of matches in the box. (a) n G G (b) The box i
  3. November 2022, Paper 4, Q11 (6 marks): The diagram shows two right-angled triangles that are joined together. All measurements are given accurate to 2 significant figures. 8.3 cm Not to scale x cm 42
  4. November 2021, Paper 6, Q9 (8 marks): The width, w, of a kitchen cupboard is 60 cm, correct to the nearest centimetre. (a) Complete the error interval for the width, w. (a) w 1 G (b) Six of these ki
  5. November 2020, Paper 4, Q11 (7 marks): (a) The length, d, of Jamal’s car is 4.72 m, correct to 2 decimal places. Complete the error interval for the length, d. (a) d 1 G (b) Jamal travels 430 km, cor
  6. November 2020, Paper 6, Q4 (7 marks): Nina estimates the value of 0 546 . 220 # (a) Show that Nina’s answer is 64. (b) Calculate the error in her estimated answer as a percentage of the exact answer
  7. November 2018, Paper 6, Q4 (2 marks): Use the symbols 1 , , , 2 , or to complete this statement. G = H If x = 4.7, truncated to 1 decimal place, then 4.7 x 4.8
  8. June 2017, Paper 4, Q2 (2 marks): The length, L, of a steel rod is 8.3 m, correct to 1 decimal place. Complete the error interval for length L. G L 1

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