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Cornerstone · Grades 3–5 Keystones #1 23 February 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 23 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 4⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 30

    Answer: x = 5
  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 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Find the mean of: 19, 12, 16, 6, 13

    Answer: 13.2

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