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Cornerstone · Grades 3–5 Keystones #1 6 September 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 September 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 5x - 19 = 51

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

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 2:3

    Answer: 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 8, 12, 11, 19, 3

    Answer: 10.6

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