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Cornerstone · Grades 3–5 Keystones #1 14 December 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 61

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 11cm

    Answer: 15.56cm
  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: 15, 10, 19, 13

    Answer: 14.25

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