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Cornerstone · Grades 3–5 Keystones #1 19 February 2025 Skills week 1 of 7
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Five GCSE retrieval questions · 19 February 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 3⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 60

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 5cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 3:1:1

    Answer: 48, 16 and 16
  5. 5. Statistics Mean

    Find the mean of: 9, 3, 3

    Answer: 5

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