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MATHS

Number Knowledge

Paper 8

Total Score

Read each question carefully. Choose the best answer (A–E) and mark it clearly. There is only one correct answer per question unless stated otherwise.

1.
Chloe's two brothers have ages that multiply to 27. Which ages could they be? 13 and 14 5 and 5 3 and 9 4 and 7 6 and 4
  • A.13 and 14
  • B.5 and 5
  • C.3 and 9
  • D.4 and 7
  • E.6 and 4
2.
What is the largest square number less than 5?
  • A.9
  • B.3
  • C.4
  • D.0
  • E.1
3.
What is XLII in figures?
  • A.42
  • B.62
  • C.40
  • D.60
  • E.32
4.
1 and 24 are two factors of 24. Which list shows the other factors? 2, 3, 4, 6, 8, 12
  • A.2, 3, 4, 6, 8
  • B.2, 3, 4, 6, 8, 12
  • C.2, 3, 4, 6, 7, 8, 12
  • D.1, 2, 3, 4, 6, 8, 12
  • E.2, 3, 4, 6, 8, 12, 16
5.
The temperature at midnight is -2°C. By noon it is 9°C warmer. What is the temperature at noon?
  • A.11°C
  • B.-11°C
  • C.7°C
  • D.9°C
  • E.-7°C
6.
Which number is not a common factor of 8 and 32? 1, 6, 2, 4, 8
  • A.1
  • B.6
  • C.2
  • D.4
  • E.8
7.
Which of these statements is true? A) 28 is a prime number B) 49 is a cube number C) 6 is a square number D) 64 is a square number E) 27 is a prime number
  • A.28 is a prime number
  • B.49 is a cube number
  • C.6 is a square number
  • D.64 is a square number
  • E.27 is a prime number
8.
What is 10 added to the only prime number between 88 and 94?
  • A.93
  • B.79
  • C.107
  • D.99
  • E.89
9.
Ahmed thinks of a number. If you square it and subtract 20, the answer is a square number. What number could he be thinking of?
  • A.5
  • B.6
  • C.4
  • D.7
  • E.3
10.
Maya thinks of a number. If you square it and subtract 9, the answer is a square number. What number could she be thinking of?
  • A.5
  • B.4
  • C.1
  • D.6
  • E.2

Practice feedback survey

Optional: after marking, tick the main reason for each mistake (you can tick more than one if it helps). Count the ticks in each column and write the totals in the bottom row—patterns here make revision easier than a score alone. When printing, this survey starts on its own page so you can skip that sheet in the print range if you do not need it.

QDidn't Understand the ConceptMisread the questionCalculation ErrorPartial Step ErrorWrong Option Marking
1
2
3
4
5
6
7
8
9
10
Total
Didn't Understand the Concept
The underlying idea or method was unclear—worth revisiting explanations or examples before more drill.
Misread the question
The topic was familiar, but a detail was missed (e.g. “not”, units, or what exactly to find).
Calculation Error
The approach was reasonable, but arithmetic, copying a figure, or a single step was wrong.
Partial Step Error
Working started correctly but went off track part-way—often a wrong operation or missed step.
Wrong Option Marking
The working or thinking pointed to the right answer, but the wrong letter was circled or recorded.

Answer key

Maths · Number Knowledge · 5 April 2026

  • 1. C3 and 9
  • 2. C4
  • 3. A42
  • 4. B2, 3, 4, 6, 8, 12
  • 5. C7°C
  • 6. B6
  • 7. D64 is a square number
  • 8. D99
  • 9. B6
  • 10. A5

Parent analytics — how Studoo shows progress

This worksheet is a one-off snapshot. In the Studoo app, parents get live dashboards similar to the examples below—so you see trends, topic gaps, and why marks are lost, not only final scores.

Subject mastery

Strengths by subject at a glance—prioritise revision without guesswork.

Maths78%English64%VR58%NVR61%

Weekly score trend

Spot improvement or dips early—keep 11+ prep consistent week to week.

MonWedFriSun

Answer mix (correct · incorrect · not sure)

See confidence gaps—not just the headline score after each session.

72% correct · 20% incorrect · 8% not sureIllustrative sample — your child's chart updates after every practice.

Speed vs accuracy

Highlights rushing: very fast answers with lower accuracy often mean traps or careless errors.

Accuracy %Time per Q (s)

Turn this paper into ongoing insight

Marking a printable sheet tells you the score for today. Studoo keeps a running picture of progress, habits, and topics to fix first—the same ideas behind the charts above, personalised for your child.

  • Subject & topic accuracy — see exactly where marks are lost, not just totals.
  • Weekly trends — notice plateaus or dips while there is time to adjust revision.
  • Behavioural signals — pacing, "not sure" usage, and common exam-style traps.
  • Actionable next steps — focused topics and suggestions instead of generic worksheets alone.
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