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Cornerstone · Grades 3–5 Keystones #1 29 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄7

    Answer: 33⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 12 = 0

    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 125 in the ratio 1:1:3

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

    Calculate the mean of: 14, 10, 33, 42, 18, 16, 32, 42

    Answer: 25.9

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