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Cornerstone · Grades 3–5 Keystones #1 13 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 13 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄3

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 69

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 23, 39, 31, 8, 10, 38, 27, 49

    Answer: 28.1

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