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

Five GCSE retrieval questions · 5 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 1⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 58

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 6cm

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 1:2

    Answer: 9 and 18
  5. 5. Statistics Mean

    Find the mean of: 12, 18, 15, 3, 8

    Answer: 11.2

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