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

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

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 71

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

    Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 19, 43, 33, 44, 24, 10, 15. Give your answer to 2 decimal places

    Answer: 26.86

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