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Cornerstone · Grades 3–5 Keystones #1 16 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 16 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 2⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 17

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 2:2:3

    Answer: 26, 26 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 23, 38, 34, 5, 19, 32

    Answer: 25.2

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