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Cornerstone · Grades 3–5 Keystones #1 10 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 54

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 12, 34, 49, 37, 40, 25, 22

    Answer: 31.3

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