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Cornerstone · Grades 3–5 Keystones #1 17 September 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 September 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 3⁄12

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 14

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 41, 46, 20, 36, 8, 24, 49, 44

    Answer: 33.5

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