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Cornerstone · Grades 3–5 Keystones #1 28 April 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄4

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 47

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

    Calculate the hypotenuse when a = 3cm and b = 11cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics Mean

    Find the mean of: 5, 13, 2

    Answer: 6.6666666666667

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