Adding and subtracting downloads

Using $1.64 Puzzle, students can practice their adding skills by placing the correct coins...

100-cell calculation is invented to develop a fundamental mathematic capacity of...

This program will help you learn basic addition and subtraction.

The Integer Balance Beam Puzzles application lets you practice adding and subtracting...

Students are shown eight integers, and they have to pick three that add up to a given sum.

This program will help you learn counting, adding and subtracting.

This is a simple "mental math" game that is played against the computer.