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Cornerstone · Grades 3–5 Keystones #1 15 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 69

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 17, 35, 20, 30, 24, 18

    Answer: 24

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