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Cornerstone · Grades 3–5 Keystones #1 19 July 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 5⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 31

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 34, 25, 16, 21, 39, 45, 39, 38. Give your answer to 2 decimal places

    Answer: 32.13