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Cornerstone · Grades 3–5 Keystones #1 10 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 5⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 15 = 75

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Find the mean of: 2, 18, 4, 2

    Answer: 6.5

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