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Cornerstone · Grades 3–5 Keystones #1 13 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 27 + 37

    Answer: 57
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 68

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

    Calculate the hypotenuse when a = 9cm and b = 6cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 32, 13, 47, 16, 29, 29, 20

    Answer: 26.6