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Cornerstone · Grades 3–5 Keystones #1 22 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 3⁄7

    Answer: 16⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 65

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

    Calculate the hypotenuse when a = 6cm and b = 11cm

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 2:3

    Answer: 10 and 15
  5. 5. Statistics Mean

    Find the mean of: 14, 4, 2, 17, 17

    Answer: 10.8

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