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Cornerstone · Grades 3–5 Keystones #1 12 September 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 4x - 13 = 19

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Share 63 in the ratio 4:3

    Answer: 36 and 27
  5. 5. Statistics Mean

    Find the mean of: 10, 25, 9, 8, 8

    Answer: 12

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