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Cornerstone · Grades 3–5 Keystones #1 25 September 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 25 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄4

    Answer: 21⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 44

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 5cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:1:2

    Answer: 60, 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 15, 20, 8, 14

    Answer: 14.25

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