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Cornerstone · Grades 3–5 Keystones #1 2 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 4x + 15 = 63

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 4:1

    Answer: 24 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 50, 12, 18, 23, 32, 45, 41, 45

    Answer: 33.25

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