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Cornerstone · Grades 3–5 Keystones #1 8 November 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄8

    Answer: 15⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 10 = 30

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Find the mean of: 8, 14, 11, 7

    Answer: 10

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