Fill in the missing numbers in this fun math worksheet for kids, featuring Lucas & Friends.
A black and white worksheet titled "Fill the Missing Numbers" featuring a sequence of numbers with blanks to be filled in, including 1 _ 3 _ 5, _ _ 8 _ 10, 11 _ _ 15, and _ 17 18 _ 20. The top right corner has a cartoon character labeled "Lucas," and the bottom includes the "Lucas & Friends" logo and website information.