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Cornerstone · Grades 3–5 Keystones #1 31 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄7

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = -3

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 3:2

    Answer: 54 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 34, 50, 24, 32, 46, 21, 9, 18

    Answer: 29.3

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