subtraction

When the regular schoolbus is in the shop, a clever driver must use all that he knows about addition and subtraction to ensure that seventy-six children get on--and off--of the four-seat substitute bus.

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

Explains equation building as two frogs count their hops to a rock, a log, and a pond.

Introduces young readers to basic subtraction, and describes what happens when Sebastian Pig goes on a camping trip with his friends and loses his camping equipment.

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.

Rhyming text and illustrations of such sea animals and plants as sponges, crabs, urchins, fish, and clams provide opportunities for practicing addition and subtraction skills.

Shows how subtraction can describe many aspects of the lives of two giant pandas who live in the San Diego Zoo.

Explains the concept of subtraction through a rhyming text about a descending elevator.