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Cornerstone · Grades 3–5 Keystones #1 11 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 11 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x - 9 = 17

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

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 20, 28, 29, 23, 13, 15

    Answer: 21.3

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