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Cornerstone · Grades 3–5 Keystones #1 3 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 72

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

    Calculate the hypotenuse when a = 3cm and b = 10cm

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics Mean

    Find the mean of: 20, 14, 16

    Answer: 16.666666666667

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