Topmarks Online
Topmarks: Daily 10
Daily 10 has maths questions on a range of maths concepts: addition, subtraction, ordering, partitioning, digit values, rounding, multiplication, division, doubles, halves and fractions. Great starter or plenary activity. Useful for...
Topmarks Online
Topmarks: Loop Cards
Fantastic for improving your mental maths. Similar to dominoes, complete the loop against the clock while practicing addition, subtraction, multiplication, and division.
Texas Instruments
Texas Instruments: Solve It! App
This App helps students develop mental math skills through structured play activities. Students progress from simply filling in missing values to actually finding both a number and an operation to make a true sentence.
Texas Instruments
Texas Instruments: Mad Minutes
This activity should help kids to perform quick computations using mental math, become less reliant on calculators for computation, and remember algorithms for common math problems by using repetition and practice.
Texas Instruments
Texas Instruments: Estimating Square Roots
By estimating the value of a square root students will get practice in identifying perfect squares, in checking for reasonableness of an answer, and in mental math.
Physics Aviary
Physics Aviary: Approximate Speed in Traffic Challenge
This game is designed to help students use mental math to find the average speed of traffic. A video which helps explain the program is here: https://www.youtube.com/watch?v=SZV-RmyPc90&feature=youtu.be
Better Lesson
Better Lesson: Distributive Property
This lesson will show students how easy mental math can be when using the distributive property.
Better Lesson
Better Lesson: Decomposing Given Large Areas, Day 3
Third graders work with decomposing arrays in order to practice finding small areas and putting the totals together. In this third lesson, they will work on finding smaller areas that make mental math more feasible.
Primary Resources
Primary Resources: Addition and Subtraction Higher Numbers
An extensive selection of teacher resources to aide in teaching and reviewing addition and subtraction of two and three digit numbers, inverse operations, counting on, and other mental strategies for addition and subtraction. Resources...
University of Saskatchewan (Canada)
University of Saskatchewan: Emr: Exercises in Math Readiness
The University of Saskatchewan offers this resource for the review of mathematical concepts that students need to enter university level math courses. Topics include mental arithmetic, algebra, geometry, trigonometry, exponential and...
US Department of Education
Helping Your Child Learn Math: Math for the Fun of It
This compilation of math activities engages parents and children in the use of math whenever they are at home. Packed with concise, high interest activities, related illustrations, detailed "parent pointers," and easy to following...
US Department of Education
Helping Your Child Learn Math: Math at the Grocery Store
Make grocery shopping a mathematical experience. Parents and children explore a variety of math concepts through this collection of engaging math activities. Lesson are presented in varying levels of difficulty, offer "Parent Pointers"...
Teachnology
Teachnology: Arithmetic Theme
Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.
Teachnology
Teachnology: Arithmetic Theme
Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.
PBS
Pbs Learning Media: Move That Math: Lesson Plan
Combine addition of numbers identified from playing cards with physical activity to engage students and increase overall fitness. This lesson plan describes a twenty to twenty five minute series of activities that require two decks of...
E-learning for Kids
E Learning for Kids: Math: Bbq Party: Counting Forwards & Backwards
Explore counting and number patterns with Lily as she throws a BBQ party.
University of Waterloo (Canada)
Math Frog: Arithmagic
Practice operations of mental math while the program timer runs.
ClassFlow
Class Flow: Estimation
[Free Registration/Login Required] After this lesson, students will be able to solve problems using a variety of mental math strategies.
Varsity Tutors 
Varsity Tutors: Aplus Math: Addition Matho
Students can practice their addition facts playing Addition MATHO, a combination of math and bingo! This is a great timed mental math activity.
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.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Figuras Magicas
In Spanish. This site contains many games for practicing mental numerical calculation of basic operations.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Ajedrez
Practice your mental skills with the game of chess. A group of two players are needed for this game.
E-learning for Kids
E Learning for Kids: Math: Australlia Bbq Party: Addition
Students will complete a series of learning games to practice addition with standard algorithms.
Other
P.u.e.m.a.c.: Juegos
Try these interactive math games to test and train the mind. Good explanation is given for each of the games. Requires Java.
Other popular searches
- Subtraction and Mental Math
 - Mental Math Strategies
 - Mental Math Division
 - Addition Mental Math
 - Divide Mental Math
 - Estimation, Mental Math
 - Mental Math Computations
 - Math Mental Computation
 - Mental Math Add
 - Estimations and Mental Math
 - Mental Math Lessons
 - Mental Math Compensation