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Cornerstone · Grades 3–5 Keystones #1 16 December 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 December 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 7⁄8

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 73

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:4

    Answer: 8 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 9, 47, 35, 17, 14, 29

    Answer: 25.2

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