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Cornerstone · Grades 3–5 Keystones #1 6 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 1⁄7

    Answer: 41⁄42
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 19

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

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics Mean

    Find the mean of: 3, 5, 16, 6, 14

    Answer: 8.8

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