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Cornerstone · Grades 3–5 Keystones #1 13 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 3⁄10

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

    Solve: 6x - 6 = 18

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 15cm

    Answer: 15.3cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 43, 20, 22, 29, 31, 10

    Answer: 25.8

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