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Cornerstone · Grades 3–5 Keystones #1 16 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 16 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

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

    Solve: 6x - 13 = 65

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

    Calculate the hypotenuse when a = 3cm and b = 11cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:4

    Answer: 18 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 48, 27, 22, 12, 46, 7, 35

    Answer: 28.1

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