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Cornerstone · Grades 3–5 Keystones #1 25 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 25 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 38

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 40, 29, 21, 29, 20, 34, 38

    Answer: 30.1

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