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Cornerstone · Grades 3–5 Keystones #1 17 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 1⁄6

    Answer: 13⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 25

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics Mean

    Find the mean of: 18, 10, 2

    Answer: 10

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