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

Five GCSE retrieval questions · 1 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = 14

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 4:1:3

    Answer: 52, 13 and 39
  5. 5. Statistics Mean

    Find the mean of: 20, 3, 9, 8, 10

    Answer: 10

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