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Cornerstone · Grades 3–5 Keystones #1 31 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄5

    Answer: 39⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 39

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

    Calculate the hypotenuse when a = 11cm and b = 14cm

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 1:2

    Answer: 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 12, 16, 20

    Answer: 16

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