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Cornerstone · Grades 3–5 Keystones #1 14 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄8

    Answer: 13⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 28

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  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: 30, 45, 5, 17, 37, 24, 14, 7. Give your answer to 2 decimal places

    Answer: 22.38

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