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Cornerstone · Grades 3–5 Keystones #1 28 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 31

    Answer: x = 3
  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

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 14, 7, 18, 12, 11

    Answer: 12.4

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