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Cornerstone · Grades 3–5 Keystones #1 11 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 33

    Answer: x = 7
  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 75 in the ratio 1:3:1

    Answer: 15, 45 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 47, 8, 26, 11, 46, 18

    Answer: 26

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