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

Five GCSE retrieval questions · 5 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄7

    Answer: 13⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 27

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics Mean

    Find the mean of: 12, 17, 10, 11, 5

    Answer: 11

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