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Cornerstone · Grades 3–5 Keystones #1 6 June 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 3⁄7

    Answer: 25⁄42
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 28

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 21, 34, 27, 38, 16, 32, 26. Give your answer to 2 decimal places

    Answer: 27.71

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