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Cornerstone · Grades 3–5 Keystones #1 16 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 16 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 59

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

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

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:2:3

    Answer: 45, 30 and 45
  5. 5. Statistics Mean

    Find the mean of: 15, 20, 9, 13, 19

    Answer: 15.2

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