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Cornerstone · Grades 3–5 Keystones #1 9 August 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 9 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄5

    Answer: 37⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 29

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

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 16, 10, 10, 12, 17

    Answer: 13

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