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Cornerstone · Grades 3–5 Keystones #1 28 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 28 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 64

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

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 14, 29, 14, 28, 38, 27, 26

    Answer: 25.1

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