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

Five GCSE retrieval questions · 7 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 5⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 58

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics Mean

    Find the mean of: 9, 14, 18, 9, 3

    Answer: 10.6

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