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Cornerstone · Grades 3–5 Keystones #1 17 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 17 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 98

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 174 in the ratio 4:1:1

    Answer: 116, 29 and 29
  5. 5. Statistics Mean

    Calculate the mean of: 39, 37, 13, 47, 26, 9, 22, 16. Give your answer to 2 decimal places

    Answer: 26.13

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