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Cornerstone · Grades 3–5 Keystones #1 2 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄6

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

    Solve: 4x + 11 = 27

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 48, 6, 21, 27, 9, 49, 42, 21

    Answer: 27.9

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