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Cornerstone · Grades 3–5 Keystones #1 3 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 4⁄8

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 51

    Answer: x = 9
  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 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics Mean

    Find the mean of: 10, 5, 9, 18, 8

    Answer: 10

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