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Cornerstone · Grades 3–5 Keystones #1 16 November 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 16 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 4⁄10

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

    Solve: 5x - 10 = 10

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 1:3

    Answer: 8 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 5, 9, 22, 35, 33, 48. Give your answer to 2 decimal places

    Answer: 25.33

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