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Cornerstone · Grades 3–5 Keystones #1 12 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 79

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics Mean

    Find the mean of: 11, 18, 13

    Answer: 14

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