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Cornerstone · Grades 3–5 Keystones #1 16 June 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Find the mean of: 3, 17, 10, 5

    Answer: 8.75

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