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Cornerstone · Grades 3–5 Keystones #1 2 February 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 February 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄6

    Answer: 17⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 54

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 44, 33, 16, 9, 19, 35, 34. Give your answer to 2 decimal places

    Answer: 27.14

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