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Cornerstone · Grades 3–5 Keystones #1 3 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 85

    Answer: x = 13
  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 75 in the ratio 3:2

    Answer: 45 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 45, 26, 9, 7, 40, 27, 21

    Answer: 25

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