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Cornerstone · Grades 3–5 Keystones #1 9 December 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 December 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 2⁄10

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

    Solve: 6x + 6 = 30

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

    Calculate the hypotenuse when a = 3cm and b = 7cm

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 2:3:4

    Answer: 30, 45 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 39, 21, 41, 5, 30, 5

    Answer: 23.5

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