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Cornerstone · Grades 3–5 Keystones #1 6 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄7

    Answer: 17⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 74

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

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 4:1:2

    Answer: 72, 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 41, 46, 47, 25, 44, 34

    Answer: 39.5

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