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Cornerstone · Grades 3–5 Keystones #1 8 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄4

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 34

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

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

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

    Share 18 in the ratio 1:2

    Answer: 6 and 12
  5. 5. Statistics Mean

    Find the mean of: 19, 22, 3, 8

    Answer: 13

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