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Cornerstone · Grades 3–5 Keystones #1 29 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 5⁄7

    Answer: 27⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 59

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 18, 49, 29, 13, 25, 18, 47, 43

    Answer: 30.3

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