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Cornerstone · Grades 3–5 Keystones #1 6 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄7

    Answer: 17⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x + 3 = 27

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 1:3

    Answer: 8 and 24
  5. 5. Statistics Mean

    Find the mean of: 19, 5, 10, 10, 1

    Answer: 9

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