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Cornerstone · Grades 3–5 Keystones #1 8 August 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 4⁄11

    Answer: 5⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 3

    Answer: x = 5
  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 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 16, 40, 34, 45, 26, 9, 19, 49

    Answer: 29.75

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