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Cornerstone · Grades 3–5 Keystones #1 16 September 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 16 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 31

    Answer: x = 4
  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 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 36, 44, 41, 9, 30, 16, 13, 36

    Answer: 28.1

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