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Cornerstone · Grades 3–5 Keystones #1 31 March 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 31 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄7

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x + 5 = 59

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 3:1:3

    Answer: 39, 13 and 39
  5. 5. Statistics Mean

    Find the mean of: 10, 10, 9, 4

    Answer: 8.25

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