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Cornerstone · Grades 3–5 Keystones #1 30 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 27

    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 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 27, 6, 38, 22, 46, 43. Give your answer to 2 decimal places

    Answer: 30.33

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