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Cornerstone · Grades 3–5 Keystones #1 15 October 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄3

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

    Solve: 5x + 8 = 33

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

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 1:4:4

    Answer: 18, 72 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 17, 41, 13, 35, 43, 45, 25

    Answer: 31.3

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