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Cornerstone · Grades 3–5 Keystones #1 29 June 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 2⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 74

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

    Answer: 42 and 56
  5. 5. Statistics Mean

    Find the mean of: 2, 13, 21

    Answer: 12

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