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Cornerstone · Grades 3–5 Keystones #1 3 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 9 = 33

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 43, 45, 27, 35, 43, 7, 14, 17. Give your answer to 2 decimal places

    Answer: 28.88

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