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Cornerstone · Grades 3–5 Keystones #1 6 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 6 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄6

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 38

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Share 49 in the ratio 4:3

    Answer: 28 and 21
  5. 5. Statistics Mean

    Find the mean of: 11, 20, 12, 9

    Answer: 13

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