This is an interesting coloring picture for children who don't like mathematical calculation. Children can know all kinds of numbers by coloring numbers, or they can turn digital calculations into things and then color them, which can increase their interest in learning and let them learn in a relaxed way. For example, when calculating 1+2+4+ 1=, first teach the child to draw 1 sharp mouth and two sharp ears, connect the mouth and ears with an arc, and add the tail to become a cute little mouse, so that the child can calculate while walking.