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Cornerstone · Grades 3–5 Keystones #1 29 August 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 29 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄6

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 69

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

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 4:3:3

    Answer: 44, 33 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 26, 17, 48, 8, 5, 20, 50, 10

    Answer: 23

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