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Cornerstone · Grades 3–5 Keystones #1 3 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄4

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 27

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

    Calculate the hypotenuse when a = 3cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.3cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 3:1

    Answer: 36 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 10, 46, 49, 40, 35, 31, 32. Give your answer to 2 decimal places

    Answer: 34.71

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