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Cornerstone · Grades 3–5 Keystones #1 16 April 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 16 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 1⁄11

    Answer: 3⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 3

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 4:1:3

    Answer: 100, 25 and 75
  5. 5. Statistics Mean

    Find the mean of: 13, 3, 11, 4, 12

    Answer: 8.6

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