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Cornerstone · Grades 3–5 Keystones #1 20 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 8⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 54

    Answer: x = 10
  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 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics Mean

    Find the mean of: 4, 15, 10, 19

    Answer: 12

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