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Cornerstone · Grades 3–5 Keystones #1 27 October 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 3⁄6

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

    Solve: 4x + 15 = 63

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 5cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 11, 47, 29, 28, 12, 13, 23, 39

    Answer: 25.25

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