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Cornerstone · Grades 3–5 Keystones #1 18 September 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 18 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 2⁄10

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 11 = 11

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 4:1:2

    Answer: 64, 16 and 32
  5. 5. Statistics Mean

    Find the mean of: 3, 19, 15, 1, 12

    Answer: 10

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