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Cornerstone · Grades 3–5 Keystones #1 24 November 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 24 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = -1

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

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 11, 21, 10

    Answer: 14

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