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

Five GCSE retrieval questions · 7 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 3⁄4

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 76

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 29, 21, 7, 5, 24, 22

    Answer: 18

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