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Cornerstone · Grades 3–5 Keystones #1 4 December 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 4 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 7⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 41

    Answer: x = 10
  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

    Share 57 in the ratio 2:1

    Answer: 38 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 42, 43, 41, 26, 21, 37, 30, 8

    Answer: 31

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