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Cornerstone · Grades 3–5 Keystones #1 26 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 26 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 4⁄5

    Answer: 29⁄30
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 49

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 11, 21, 15, 48, 15, 48, 38

    Answer: 28

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