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Cornerstone · Grades 3–5 Keystones #1 18 November 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 18 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 3⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 70

    Answer: x = 10
  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 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 42, 8, 39, 7, 14, 7, 29, 33

    Answer: 22.4

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