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Cornerstone · Grades 3–5 Keystones #1 6 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 21

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 2:3

    Answer: 26 and 39
  5. 5. Statistics Mean

    Find the mean of: 7, 15, 13, 6, 8

    Answer: 9.8

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