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Cornerstone · Grades 3–5 Keystones #1 25 October 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 25 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 3⁄8

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

    Solve: 7x - 12 = 37

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 4:3:1

    Answer: 52, 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 18, 4, 3, 20

    Answer: 11.25

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