A happy, friendly bear waves to your pupils as he chugs down the railway on a short train in the image on this Subtraction Up to 20 Worksheet. Using the worksheet, your students will become motivated to complete their math problems so that they can enjoy coloring in the bear and train by number. Solving each of the 10 subtraction problems on the page will yield a correct answer as the number aligns with a dedicated color. Students then can take this color and find that number on the image. From there, they can enjoy coloring in the cartoon by number!