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Cornerstone · Grades 3–5 Keystones #1 9 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 9 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 1⁄12

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 30

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 25, 35, 45, 26, 9, 20, 15

    Answer: 25

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