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Cornerstone · Grades 3–5 Keystones #1 22 October 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 22 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

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

    Solve: 5x - 6 = 34

    Answer: x = 8
  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 90 in the ratio 1:2:3

    Answer: 15, 30 and 45
  5. 5. Statistics Mean

    Find the mean of: 8, 16, 8, 20, 15

    Answer: 13.4

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