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Cornerstone · Grades 3–5 Keystones #1 30 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 30 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄6

    Answer: 29⁄30
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 51

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics Mean

    Find the mean of: 2, 8, 23, 15

    Answer: 12

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