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Cornerstone · Grades 3–5 Keystones #1 1 April 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 1 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 2⁄12

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

    Solve: 7x + 9 = 51

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 28, 14, 48, 46, 28, 5, 40, 38. Give your answer to 2 decimal places

    Answer: 30.88

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