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Cornerstone · Grades 3–5 Keystones #1 6 January 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 43

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  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: 17, 11, 5, 14, 3

    Answer: 10

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