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Cornerstone · Grades 3–5 Keystones #1 22 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 33

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

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 95 in the ratio 1:1:3

    Answer: 19, 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 24, 14, 30, 29, 27, 50

    Answer: 29

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