Extra Field Element Parts in Squared Away?

My kids have assembled the field element cubes for Squared away and have a number of extra parts - from just 1 set!
Is this normal? Our cubes look just like the picture, but am feeling nervous about so many extra parts.
15595061227843838684135937107756 15595061782902197053362807390634

Vex always gives some spare parts. What you have appears correct.