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Cornerstone · Grades 3–5 Keystones #1 5 April 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄6

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

    Solve: 4x - 9 = 39

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 3:2:2

    Answer: 39, 26 and 26
  5. 5. Statistics Mean

    Find the mean of: 10, 5, 7, 1, 2

    Answer: 5

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