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Cornerstone · Grades 3–5 Keystones #1 5 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄6

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 62

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 3:2

    Answer: 18 and 12
  5. 5. Statistics Mean

    Find the mean of: 14, 19, 8, 16, 15

    Answer: 14.4

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