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Cornerstone · Grades 3–5 Keystones #1 20 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 20 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 34

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 26, 47, 12, 46, 18, 5, 25, 14. Give your answer to 2 decimal places

    Answer: 24.13

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