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Cornerstone · Grades 3–5 Keystones #1 5 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

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

    Solve: 2x - 18 = -2

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 1:2:4

    Answer: 30, 60 and 120
  5. 5. Statistics Mean

    Find the mean of: 20, 20, 18, 10, 18

    Answer: 17.2

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