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Cornerstone · Grades 3–5 Keystones #1 15 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 66

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

    Calculate the hypotenuse when a = 12cm and b = 7cm

    Answer: 13.89cm
  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: 40, 16, 6, 13, 36, 5, 41

    Answer: 22.4

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