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Cornerstone · Grades 3–5 Keystones #1 12 November 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 12 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 87

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 4:4:3

    Answer: 72, 72 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 46, 47, 14, 35, 49, 42, 21, 45

    Answer: 37.4

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