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Cornerstone · Grades 3–5 Keystones #1 23 April 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 23 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x - 20 = 19

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 1:3:3

    Answer: 16, 48 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 38, 34, 35, 44, 37, 20, 42

    Answer: 35.7

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