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Cornerstone · Grades 3–5 Keystones #1 18 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 15 + 35

    Answer: 45
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 65

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

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 92 in the ratio 1:1:2

    Answer: 23, 23 and 46
  5. 5. Statistics Mean

    Calculate the mean of: 36, 31, 39, 18, 38, 25, 29

    Answer: 30.9