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Cornerstone · Grades 3–5 Keystones #1 14 October 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 4⁄10

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

    Solve: 7x - 6 = 99

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 31, 29, 30, 11, 39, 39, 19, 38

    Answer: 29.5

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