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Cornerstone · Grades 3–5 Keystones #1 12 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄3

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

    Solve: 2x + 3 = 27

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 31, 21, 6, 8, 12, 8, 49

    Answer: 19.3

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