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Cornerstone · Grades 3–5 Keystones #1 21 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 5⁄7

    Answer: 75⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x - 14 = 70

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 27, 41, 29, 32, 34, 47, 29

    Answer: 34.1