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Cornerstone · Grades 3–5 Keystones #1 24 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 24 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄7

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x - 18 = 14

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 48, 24, 28, 10, 49, 46. Give your answer to 2 decimal places

    Answer: 34.17

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