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Cornerstone · Grades 3–5 Keystones #1 13 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 62

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 6, 9, 6, 17, 8

    Answer: 9.2

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