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Cornerstone · Grades 3–5 Keystones #1 25 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 5⁄11

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

    Solve: 2x - 16 = 8

    Answer: x = 12
  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 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 7, 20, 40, 44, 20, 15, 48

    Answer: 27.7

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