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Cornerstone · Grades 3–5 Keystones #1 28 June 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 3⁄6

    Answer: 13⁄14
  2. 2. Algebra Two-step equations

    Solve: 6x - 12 = 42

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Share 102 in the ratio 2:1

    Answer: 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 31, 34, 26, 49, 24, 35, 46, 6. Give your answer to 2 decimal places

    Answer: 31.38

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