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Cornerstone · Grades 3–5 Keystones #1 28 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x - 18 = 4

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

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Find the mean of: 7, 15, 20, 9, 20

    Answer: 14.2

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