Complete lyrics (is DMCA coming at me?):<p><pre><code>  Inchworm, inchworm, measuring the marigolds
  You and your arithmetic, you&#x27;ll probably go far.
  Inchworm, inchworm, measuring the marigolds
  Seems to me you&#x27;d stop and see how beautiful they are.
  
  (Kids Singing: 2 &amp; 2 are 4, 4 &amp; 4 are 8, 8 &amp; 8 are 16, 16 &amp; 16 are 32)
</code></pre>
Nothing to do with imperial units at all.<p>Even if she didn&#x27;t know the song, she might have learned 16+16 from those.