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Cornerstone · Grades 3–5 Keystones #1 6 October 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 6 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 5⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 11 = 15

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 44 in the ratio 1:3

    Answer: 11 and 33
  5. 5. Statistics Mean

    Find the mean of: 4, 14, 10

    Answer: 9.3333333333333

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