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Cornerstone · Grades 3–5 Keystones #1 11 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄7

    Answer: 17⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 29

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 240 in the ratio 1:2:2

    Answer: 48, 96 and 96
  5. 5. Statistics Mean

    Calculate the mean of: 34, 32, 36, 48, 28, 47

    Answer: 37.5

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