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Cornerstone · Grades 3–5 Keystones #1 28 November 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 28 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄8

    Answer: 41⁄40
  2. 2. Algebra Two-step equations

    Solve: 6x - 10 = 44

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

    Answer: 20 and 5
  5. 5. Statistics Mean

    Find the mean of: 16, 3, 23

    Answer: 14

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