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Cornerstone · Grades 3–5 Keystones #1 29 December 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 29 December 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 5 = 29

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

    Calculate the hypotenuse when a = 10cm and b = 15cm

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 105 in the ratio 1:3:3

    Answer: 15, 45 and 45
  5. 5. Statistics Mean

    Find the mean of: 18, 13, 17, 12

    Answer: 15

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