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

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

  1. 1. Number Adding fractions

    Calculate: 15 + 15

    Answer: 25
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 34

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 26, 29, 34, 46, 30, 33, 9

    Answer: 29.6