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Cornerstone · Grades 3–5 Keystones #1 17 October 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 17 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 3⁄10

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

    Solve: 5x - 11 = 19

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 1:2:2

    Answer: 14, 28 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 13, 17, 8, 17, 21, 9, 16, 30

    Answer: 16.4

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