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Cornerstone · Grades 3–5 Keystones #1 4 January 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 January 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 4⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 8

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 13cm

    Answer: 14.76cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 20, 12, 11

    Answer: 14.333333333333

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