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Cornerstone · Grades 3–5 Keystones #1 24 April 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 7

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 189 in the ratio 1:2:4

    Answer: 27, 54 and 108
  5. 5. Statistics Mean

    Calculate the mean of: 35, 39, 10, 22, 35, 40, 18, 12

    Answer: 26.4

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