One by one, ten energetic puppies find important jobs as dogs who help people in different ways, including by pulling sleds and saving swimmers.

A tale of twenty adventurous guinea pigs on sea and land illustrates the process of subtraction as their numbers dwindle.

Audisee® eBooks with Audio combine professional narration and text highlighting to engage reluctant readers! The author and illustrator of the best-selling Words Are CATegorical® series brings their trademark sense of humor to the subject of subtraction. Rhyming text filled with funny, countable examples shows what it means to take one number away from another. Readers are also introduced to the terminology they'll encounter as they learn to subtract....

Throughout the day, a child notices, counts, and compares numbers of items, such as how many boys and girls are on the playground and how many more girls there are than boys, until there is finally something that cannot be counted.

Colorful examples and simple games introduce the concept of subtraction.

Watch the Quidgit Family and the Subtractobats perform high-flying feats of mathematics! In this astounding story, Leap, Lily, Tad and the ever wacky Professor Quigley train numbers to count, add, and subtract in a series of amazing circus acts. The Quidgits fly from trampolines, trapezes and cannons as they teach basic mathematical concepts.

As members of a swim team do laps to qualify for swim camp, readers can practice subtracting two-digit numbers to see how many laps are left to go.

"Thirteen flies become tasty snacks in this clever reverse counting book about predators and prey. Science meets subtraction as a swarm of flies buzzes along, losing one member to each predator along the way. Includes a guide to eating bugs, complete with nutritional information for a single serving of flies."--