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Cornerstone · Grades 3–5 Keystones #1 24 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 24 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄5

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 9

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Find the mean of: 13, 17, 3, 1, 11

    Answer: 9

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