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Cornerstone · Grades 3–5 Keystones #1 19 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 19

    Answer: x = 4
  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

    Divide 156 in the ratio 2:1:3

    Answer: 52, 26 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 24, 45, 49, 13, 33, 35, 33

    Answer: 33.1

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