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Cornerstone · Grades 3–5 Keystones #1 22 October 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

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

    Solve: 6x - 19 = 65

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 4:1

    Answer: 76 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 13, 28, 32, 38, 36, 41

    Answer: 31.3

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