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Cornerstone · Grades 3–5 Keystones #1 2 November 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x + 6 = 72

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 30, 12, 17, 22, 50, 8

    Answer: 23.2

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