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Cornerstone · Grades 3–5 Keystones #1 11 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 2⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = -2

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 3:2

    Answer: 21 and 14
  5. 5. Statistics Mean

    Find the mean of: 13, 17, 20, 8, 7

    Answer: 13

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