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Cornerstone · Grades 3–5 Keystones #1 8 July 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 1⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = -8

    Answer: x = 4
  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 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 33, 23, 24, 8, 41, 41, 17. Give your answer to 2 decimal places

    Answer: 26.71

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