Ducksters
Ducksters: Practice Math Answers: Triple Digit Addition
Find answers to the triple-digit addition problems on this site.
Teaching Treasures Publications
Teaching Treasures: Year Four Math (Page 4)
This interactive worksheet that focuses on all four operations including three-digit addition and subtraction and basic multiplication and division facts. This easy to navigate tool gives learners immediate feedback. Problems presented...
ClassFlow
Class Flow: Multiplication by Two Digit Multipliers
[Free Registration/Login Required] This flipchart introduces multiplying two-digits by two-digits. It gives the steps involved, guided practice, and individual practice problems.
Topmarks Online
Topmarks: Subtraction Grids
Can you meet the challenge to see how many subtraction calculations you can do in two minutes? There are different levels and you can choose either one or two missing numbers to make your number sentence correct.
University of Cambridge
University of Cambridge: Nrich: Napier's Bones
Use this one page website to learn how to multiply and divide a "new" way. This method was invented over 400 years ago by John Napier. A detailed explanation is only a click away.
Shmoop University
Shmoop: Converting Decimals
This animation features the mathematical concept of converting decimals how to perform the calculation. 2:17sec.
Quia
Quia: Multiplication Millionaire (Game)
Who wants to be a millionaire? Make it to the million dollar level by continually answering these multiplication problems correctly. Not sure of the answer? Use a hint.
Ducksters
Ducksters: Practice Math Answers: Triple Digit Multiplication
Find the answers to the triple-digit multiplication practice problems on this site.
Toy Theater
Toy Theater: Math Test
You choose the type of math test you want to take: addition, subtraction or multiplication. Then decide how many digit you want in your problem. Click "Start" and type in the answer. Click "Next" to get the next problem. It keeps track...