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Cornerstone · Grades 3–5 Keystones #1 6 November 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄5

    Answer: 23⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 60

    Answer: x = 7
  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

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 34, 39, 46, 36, 35, 6, 27, 15

    Answer: 29.8

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