Make Numberblock 50 with Numberblocks 5, 6, 7, 8, 9, and agent 15! We borrow the blocks from agent 15 and them them to our Numberblock friends to build 5 tens. 5 lots of tens makes 50! This is a fun video for toddlers, preschools, kindergarteners, early math learners, and numberblock fans using educational math link cube toys.