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Cornerstone · Grades 3–5 Keystones #1 19 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄7

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 25

    Answer: x = 6
  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

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 19, 30, 30, 39, 10, 9. Give your answer to 2 decimal places

    Answer: 22.83

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