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

Five GCSE retrieval questions · 1 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 1⁄7

    Answer: 13⁄42
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 27

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics Mean

    Find the mean of: 10, 4, 4

    Answer: 6

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