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Cornerstone · Grades 3–5 Keystones #1 8 January 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 8 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄8

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 11 = 19

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 35, 9, 16, 9, 18, 23, 19, 10. Give your answer to 2 decimal places

    Answer: 17.38

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