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Cornerstone · Grades 3–5 Keystones #1 19 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 19 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 1⁄5

    Answer: 43⁄40
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 56

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 8, 13, 12, 3

    Answer: 9

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