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Cornerstone · Grades 3–5 Keystones #1 23 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄8

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

    Solve: 8x - 7 = 65

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 3:2

    Answer: 60 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 40, 11, 32, 8, 36, 16, 22

    Answer: 23.6

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