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Cornerstone · Grades 3–5 Keystones #1 15 June 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄4

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 28

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

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

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

    Divide 48 in the ratio 2:1:1

    Answer: 24, 12 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 20, 48, 33, 10, 25, 5, 22. Give your answer to 2 decimal places

    Answer: 23.29

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