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Cornerstone · Grades 3–5 Keystones #1 8 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 3⁄7

    Answer: 31⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 50

    Answer: x = 5
  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 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 39, 29, 13, 32, 34, 17, 46

    Answer: 30

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