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Cornerstone · Grades 3–5 Keystones #1 16 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 48

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 253 in the ratio 4:4:3

    Answer: 92, 92 and 69
  5. 5. Statistics Mean

    Calculate the mean of: 25, 20, 22, 18, 9, 8, 44

    Answer: 20.9

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