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

Five GCSE retrieval questions · 5 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 96

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 33, 11, 7, 50, 7, 27

    Answer: 22.5

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