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Cornerstone · Grades 3–5 Keystones #1 18 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄7

    Answer: 47⁄42
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 39

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

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Find the mean of: 13, 11, 19, 13

    Answer: 14

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