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Cornerstone · Grades 3–5 Keystones #1 28 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 67

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 9cm

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 1:3

    Answer: 17 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 47, 13, 24, 26, 16, 27

    Answer: 25.5

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