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Cornerstone · Grades 3–5 Keystones #1 7 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 2⁄11

    Answer: 4⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 55

    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 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 50, 8, 21, 34, 18, 47, 25, 13

    Answer: 27

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