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Cornerstone · Grades 3–5 Keystones #1 14 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄8

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

    Solve: 3x + 7 = 40

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 1:3

    Answer: 13 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 24, 27, 29, 40, 44, 29, 39

    Answer: 33.1

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