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Cornerstone · Grades 3–5 Keystones #1 6 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 72

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics Mean

    Find the mean of: 2, 8, 3, 15

    Answer: 7

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