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Cornerstone · Grades 3–5 Keystones #1 15 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 47 + 23

    Answer: 2621
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = 22

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 4:3

    Answer: 44 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 24, 11, 11, 43, 12, 35, 40, 41

    Answer: 27.1