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Cornerstone · Grades 3–5 Keystones #42 11 February 2026 Skills week 7 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 February 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing fractions

    Divide: 58 ÷ 17

    Answer: 358
  2. 2. Algebra Two-step inequalities

    Solve: 3x + 5 < 45

    Answer: x < 13.3
  3. 3. Geometry Area of a right-angled triangle

    Calculate the area of a right triangle with perpendicular sides 9cm and 6cm

    Answer: 27cm²
  4. 4. Ratio Unitary method

    7 kg costs £11.70. What is the cost of 12 kg?

    Answer: £20.06
  5. 5. Statistics Mode

    What are the modes of: 37, 37, 17, 20, 20, 25

    Answer: 20 and 37