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Cornerstone · Grades 3–5 Keystones #1 8 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

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

    Solve: 3x - 6 = 6

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

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 1:4:4

    Answer: 24, 96 and 96
  5. 5. Statistics Mean

    Calculate the mean of: 18, 38, 45, 6, 10, 40, 27, 41

    Answer: 28.1

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