6 children were playing in a playground. They were joined by another group of children. After that, there were 10 children in the playground. How many children were in the group that joined?
Michael is 2 years old. Benjamin is 1 year older than Michael. Madison is 5 years older than Benjamin. How old is Madison?
Hannah built a tower with 14 blocks, but 6 blocks fell off. How many blocks are still in the tower?