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Cornerstone · Grades 3–5 Keystones #1 23 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄4

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

    Solve: 8x - 14 = 74

    Answer: x = 11
  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 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 5, 19, 8

    Answer: 10.666666666667

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