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Cornerstone · Grades 3–5 Keystones #1 28 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 28 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄6

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 29

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 25, 6, 20, 8, 45, 36, 25. Give your answer to 2 decimal places

    Answer: 23.57

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