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Cornerstone · Grades 3–5 Keystones #1 9 November 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 6⁄8

    Answer: 31⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 70

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 1:3

    Answer: 12 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 29, 31, 44, 10, 31, 6, 41

    Answer: 27.4

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