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Cornerstone · Grades 3–5 Keystones #1 26 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄3

    Answer: 22⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 47

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 21, 48, 46, 35, 22, 29, 30

    Answer: 33

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