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Cornerstone · Grades 3–5 Keystones #1 20 September 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 September 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 69

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 3:3:2

    Answer: 36, 36 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 6, 45, 38, 37, 11, 31, 42, 18

    Answer: 28.5

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