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Cornerstone · Grades 3–5 Keystones #1 21 September 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 21 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 43

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 98 in the ratio 4:3

    Answer: 56 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 17, 7, 9, 19, 41, 7, 40, 37

    Answer: 22.1

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