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Cornerstone · Grades 3–5 Keystones #1 29 October 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 29 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 7

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 6cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 3:2

    Answer: 21 and 14
  5. 5. Statistics Mean

    Find the mean of: 5, 13, 14, 20

    Answer: 13

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