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Cornerstone · Grades 3–5 Keystones #1 13 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 70

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 1:3:3

    Answer: 26, 78 and 78
  5. 5. Statistics Mean

    Find the mean of: 11, 4, 3

    Answer: 6

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