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Cornerstone · Grades 3–5 Keystones #1 2 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 2⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 43

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 3:1:1

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

    Find the mean of: 10, 9, 20, 9, 10

    Answer: 11.6

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