A brief lesson on subtracting from three-digit numbers that includes detailed examples, rules, and further explanation of borrowing.

You can challenge a friend to play this game to practice your arithmetic skills. Be ready because any kind of problem can pop up. You can adjust the problems to make them harder and also to give you less time.

Canoe Puppies is a multiplayer math game that allows students from anywhere in the world to race against each other while practicing adding two-digit numbers!

This is a site for students and teachers of all grade levels. If you are looking for math tables, general information about math topics, or you would like to ask a question, this is the site to visit.

Players help Tortisaurus build a pyramid by assembling equations that match particular answers. Involves the application of whole-number addition, subtraction, multiplication, and division skills.

The Red-necked Grebe eats its own feathers. Find out if scientists know why plus delve into other facts on this informative site. In addition, you can hear the songs of this grebe on this site.

Use this interactive worksheet for practice or assessment of basic computation skills. Problems covering all four operations are included such as four-digit addition and subtraction and multiplication and division facts through twelve...

This one page website offers a challenge that will require you to use your problem solving skills. There are teacher tips and the solution available to help.

This resource has three problem sets to practice subtraction using Abacus worksheet. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the questions,...

Practice making a number by adding other numbers. All numbers in these problems are less than 10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.