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Cornerstone · Grades 3–5 Keystones #1 26 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 26 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 3⁄5

    Answer: 51⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 60

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics Mean

    Find the mean of: 19, 13, 5

    Answer: 12.333333333333

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