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Cornerstone · Grades 3–5 Keystones #1 26 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 39

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 1:1:2

    Answer: 22, 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 27, 38, 29, 40, 19, 40, 42

    Answer: 33.6

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