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Cornerstone · Grades 3–5 Keystones #1 31 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 31 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 72

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:2

    Answer: 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 17, 19, 49, 7, 22, 25, 37

    Answer: 25.1

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