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Cornerstone · Grades 3–5 Keystones #1 14 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 6x + 11 = 41

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:1:4

    Answer: 54, 18 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 31, 49, 8, 44, 39, 37, 6, 15

    Answer: 28.6

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