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Cornerstone · Grades 3–5 Keystones #1 25 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 25 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 3x - 7 = 38

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

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

    Answer: 12.73cm
  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: 19, 25, 2, 10

    Answer: 14

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