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Cornerstone · Grades 3–5 Keystones #1 20 June 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 20 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 2:2:1

    Answer: 56, 56 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 29, 13, 8, 39, 18, 30, 12

    Answer: 21.3

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