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Cornerstone · Grades 3–5 Keystones #1 21 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄8

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 76

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 22, 30, 23, 10, 32, 29, 43

    Answer: 27

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