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Cornerstone · Grades 3–5 Keystones #1 4 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 4 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 4⁄12

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 2

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

    Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 16, 9, 18, 9

    Answer: 13

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