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

Five GCSE retrieval questions · 5 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Share 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 28, 29, 10, 32, 27, 21, 26, 41

    Answer: 26.75

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