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

Five GCSE retrieval questions · 3 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 2⁄12

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 24

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

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 28, 45, 48, 12, 36, 15, 17

    Answer: 28.7

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