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Cornerstone · Grades 3–5 Keystones #1 9 December 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 4⁄6

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 34

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 9cm

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 4:3:2

    Answer: 72, 54 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 29, 11, 47, 18, 22, 7, 12

    Answer: 20.9

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