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

Five GCSE retrieval questions · 7 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄8

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 34

    Answer: x = 5
  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

    Share 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 38, 33, 40, 13, 37, 39. Give your answer to 2 decimal places

    Answer: 33.33

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