Educational train-themed number sequence worksheet for children to practice counting and filling in missing numbers.

A colorful educational worksheet featuring a train theme with five red and yellow locomotives pulling blue carriages. Each carriage displays a sequence of numbers with missing values, such as 51, 53, 55, 57, 59, prompting children to fill in the blanks. The worksheet includes a space for the student's name and date at the top left, and a fun fact in a cloud bubble: "The longest freight train had 660 cars and took 16 locomotives to pull it." The design is framed with a red and white zigzag border.