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Cornerstone · Grades 3–5 Keystones #1 21 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 21 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 9 = 57

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

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 68 in the ratio 1:2:1

    Answer: 17, 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 17, 10, 4, 16

    Answer: 11.75

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