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Cornerstone · Grades 3–5 Keystones #1 10 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 3⁄6

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 36

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 44, 7, 31, 32, 8, 27, 17. Give your answer to 2 decimal places

    Answer: 23.71

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