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Cornerstone · Grades 3–5 Keystones #1 21 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 7x - 10 = 60

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 4:3

    Answer: 24 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 11, 15, 28, 50, 12, 16

    Answer: 22

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