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Cornerstone · Grades 3–5 Keystones #1 16 October 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

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

    Solve: 4x + 3 = 39

    Answer: x = 9
  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

    Divide 120 in the ratio 2:1:1

    Answer: 60, 30 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 21, 18, 7, 14, 32, 16

    Answer: 18