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Cornerstone · Grades 3–5 Keystones #1 14 October 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 4⁄8

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

    Solve: 4x - 10 = 42

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

    Calculate the hypotenuse when a = 7cm and b = 9cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 1:4:3

    Answer: 11, 44 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 18, 50, 13, 12, 5, 20, 9, 6

    Answer: 16.6

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