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

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄3

    Answer: 20⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 23

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

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Share 98 in the ratio 3:4

    Answer: 42 and 56
  5. 5. Statistics Mean

    Find the mean of: 5, 14, 17

    Answer: 12

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