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Cornerstone · Grades 3–5 Keystones #1 23 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 1⁄7

    Answer: 13⁄42
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 46

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

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 26, 24, 10, 35, 13, 46

    Answer: 25.7

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