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Cornerstone · Grades 3–5 Keystones #1 2 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 3⁄4

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 60

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Find the mean of: 11, 2, 14

    Answer: 9

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