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Cornerstone · Grades 3–5 Keystones #1 10 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 24

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Divide 120 in the ratio 2:3:3

    Answer: 30, 45 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 27, 36, 50, 22, 27, 9

    Answer: 28.5

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