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Cornerstone · Grades 3–5 Keystones #1 22 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 1

    Answer: x = 5
  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 200 in the ratio 4:3:1

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

    Calculate the mean of: 45, 32, 11, 36, 25, 45, 18

    Answer: 30.3

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