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Cornerstone · Grades 3–5 Keystones #1 19 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 4x + 7 = 51

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

    Calculate the hypotenuse when a = 8cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.12cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 49, 50, 30, 13, 34, 24, 21. Give your answer to 2 decimal places

    Answer: 31.57

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