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Cornerstone · Grades 3–5 Keystones #1 25 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 6x + 10 = 76

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 1:2

    Answer: 6 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 33, 34, 22, 12, 37, 21

    Answer: 26.5

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