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Cornerstone · Grades 3–5 Keystones #1 2 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 24

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 2:1:1

    Answer: 54, 27 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 7, 20, 39, 49, 39, 13, 9. Give your answer to 2 decimal places

    Answer: 25.14

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