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Cornerstone · Grades 3–5 Keystones #1 21 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 4⁄7

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

    Solve: 5x + 4 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics Mean

    Find the mean of: 10, 22, 4

    Answer: 12

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