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Cornerstone · Grades 3–5 Keystones #1 3 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄5

    Answer: 17⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 14 = 42

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 37, 46, 20, 36, 36, 20

    Answer: 32.5

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