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Cornerstone · Grades 3–5 Keystones #1 16 June 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 5⁄11

    Answer: 6⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 43

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 2:2:1

    Answer: 80, 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 25, 30, 17, 13, 30, 8, 10

    Answer: 19

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