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Cornerstone · Grades 3–5 Keystones #1 30 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 4⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 59

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Find the mean of: 10, 9, 4, 8

    Answer: 7.75

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