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Cornerstone · Grades 3–5 Keystones #1 30 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄3

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 18

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

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 31, 27, 7, 5, 13, 23, 29, 32

    Answer: 20.9

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