大象传媒

This clip shows how to subtract 10 from a two-digit number. The clip is illustrated by 68 ants departing on leaf boats in tens. The ants are sent off in teams of 10 to participate in an ant regatta. As the boats depart, we see 10 being taken away from 68, and then from 58, etcetera on a notepad. Eventually there are only 8 ants remaining who get into the last boat.