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Cornerstone · Grades 3–5 Keystones #1 9 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 2⁄11

    Answer: 5⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 275 in the ratio 4:4:3

    Answer: 100, 100 and 75
  5. 5. Statistics Mean

    Find the mean of: 18, 9, 10, 7

    Answer: 11

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