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

Five GCSE retrieval questions · 5 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 1⁄11

    Answer: 4⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 38

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 20, 1, 12

    Answer: 11

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