subtraction

Describes the basic principles of adding and subtracting and explains how to perform these activities.

Presents a visual approach to understanding how to subtract one from one-digit numbers.

A group of rowdy but rollicking dinosaurs count down from a boisterous ten to a sleepy one.

Challenged to spend twenty dollars in one day, a boy who loves money not only learns about bargain hunting and keeping track of his remaining balance, he also learns that spending can be fun.

A simple introduction to the mathematical concept of regrouping to help early learners with addition and subtraction skills, including explained sample problems and related activities.

Teaches young readers about threatened and endangered animals and how people can help them, through rhyming verse and subtraction problems.

Presents addition and subtraction story problems involving lollipops, taffy, gumballs, peppermints, fudge, and other types of candy.

Includes an assortment of activities and illustrations to help explain the concept of subtraction.

Teaches addition and subtraction by using an illustrated story about construction machines.

Counting down from twelve to zero, the reader learns about some of the fish found on the Great Barrier Reef and the threats to their continued existence.