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Cornerstone · Grades 3–5 Keystones #1 3 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 29

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

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 3:1

    Answer: 27 and 9
  5. 5. Statistics Mean

    Find the mean of: 16, 11, 16

    Answer: 14.333333333333

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