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Cornerstone · Grades 3–5 Keystones #1 25 August 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄4

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

    Solve: 4x + 8 = 36

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 25, 47, 26, 22, 42, 33

    Answer: 32.5

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