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Cornerstone · Grades 3–5 Keystones #1 21 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 18 = 18

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 6cm

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Share 126 in the ratio 4:3

    Answer: 72 and 54
  5. 5. Statistics Mean

    Find the mean of: 6, 4, 17, 18

    Answer: 11.25

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