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Cornerstone · Grades 3–5 Keystones #1 17 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 4⁄8

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = 16

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

    Calculate the hypotenuse when a = 3cm and b = 11cm

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

    Share 35 in the ratio 2:3

    Answer: 14 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 16, 6, 10, 18, 49, 16

    Answer: 19.2

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