Fill in the missing numbers on this fun Lucas & Friends math worksheet.
A black and white educational worksheet titled "Fill the Missing Numbers" featuring a cartoon character named Lucas. The worksheet includes sequences of numbers with blanks to be filled in, such as 1 _ 3 _ 5, _ _ 8 _ 10, 11 _ _ 15, and _ 17 18 _ 20. The top right corner has the Lucas & Friends logo, and the bottom includes a QR code and website link for RV App Studios.