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Cornerstone · Grades 3–5 Keystones #1 31 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄5

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 49

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 6cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 14, 18, 5, 11, 6

    Answer: 10.8

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