Winona purchased a set of vintage beads.there are 2,140 beads in the set. if she uses the beads to make bracelets that have 7 beads each, about how many bracelets can she make?

The number of bracelets that can be made through the number of beads that Winona purchased can be determined by dividing the number of beads by the number needed for each of the bracelets. 

              n = 2140 / 7
 
              n = 305.7

305 bracelets

Yes you can measure a ruler with mm on it with cm