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Cornerstone · Grades 3–5 Keystones #1 23 October 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 1⁄11

    Answer: 6⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 59

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Find the mean of: 13, 7, 17, 8

    Answer: 11.25

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