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Cornerstone · Grades 3–5 Keystones #1 11 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 4⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 21

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

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics Mean

    Find the mean of: 10, 4, 12

    Answer: 8.6666666666667

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