ClassFlow
Class Flow: Mental Math
[Free Registration/Login Required] After this lesson, students will be able to solve problems using a variety of mental math strategies.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Multiplication: Mental Calculation
If you are looking for a website that explains and defines the basics of mental multiplication with helpful hints then you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
Soft Schools
Soft Schools: Distributive Property
Learn about the distributive property and how doing mental math can help.
Other
Lesson Plan Mental and Written Multiplication Algorithms
This lesson plan offers a variety of algorithms and systematic errors that occur in written multiplication problems.
Ministry of Education and Employment of Spain
Red Escolar: Numeros
Numbers have very interesting properties and we can do many tricks with them. Try several math tricks and games that you can play by yourself or with a friend.