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Cornerstone · Grades 3–5 Keystones #1 12 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄5

    Answer: 32⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 32

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 4cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Find the mean of: 2, 16, 11, 3

    Answer: 8

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