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Cornerstone · Grades 3–5 Keystones #1 16 August 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 2⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x - 16 = 26

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 44, 22, 33, 46, 38, 39, 42. Give your answer to 2 decimal places

    Answer: 37.71

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