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Cornerstone · Grades 3–5 Keystones #1 4 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 3⁄7

    Answer: 22⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 65

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 20, 18, 9, 5, 19

    Answer: 14.2

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