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Cornerstone · Grades 3–5 Keystones #1 26 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

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

    Solve: 5x + 8 = 28

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 252 in the ratio 4:2:3

    Answer: 112, 56 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 18, 26, 28, 50, 20, 43, 46, 19

    Answer: 31.3

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