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Cornerstone · Grades 3–5 Keystones #1 14 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 4⁄5

    Answer: 58⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 30

    Answer: x = 4
  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 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics Mean

    Find the mean of: 20, 13, 6

    Answer: 13

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