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Cornerstone · Grades 3–5 Keystones #1 22 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 12

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

    Calculate the hypotenuse when a = 12cm and b = 14cm

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics Mean

    Find the mean of: 4, 2, 14, 18, 20

    Answer: 11.6

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