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.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Figuras Magicas
Interactive fun activities that could be used in the classroom to practice mental math skills.
Varsity Tutors
Varsity Tutors: Aplus Math: Division Flashcards
Practice basic division facts using online flashcards. The game keeps track of how many of the attempted flashcards you get correct, and lets you know your percentage. Did you input an incorrect answer? Don't worry, a message with the...
CK-12 Foundation
Ck 12: Mental Math for Multiplication/ Division Equations
[Free Registration/Login Required] Students practice solving equations with multiplication and division. Click challenge me to answer a practice question and click learn more to watch a video.
E-learning for Kids
E Learning for Kids: Math: Llama Farm: Mixed Operations
On this interactive site students learn to write a remainder as a decimal and solve division problems using the appropriate mental, written or calculator strategy.
University of Waterloo (Canada)
Math Frog: Arithmagic
Practice operations of mental math while the program timer runs.
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.
AAA Math
Aaa Math: Aaa Math Lessons
AAA Math's interactive tutorials and lessons assist students grades K-8 improve their understanding of a wide range of arithmetic topics. Students are provided with immediate feedback as they complete the "Learn," "Practice," and "Play"...
Teaching Treasures Publications
Teaching Treasures: Year Four Timed Mental Math (Page 2)
Improve your computations skills in all four operations with this timed interactive worksheet. Solve ten problems in five minutes or less. Problems are presented in horizontal format and answers can be checked immediately. This worksheet...
Teaching Treasures Publications
Teaching Treasures: Year Eight Timed Mental Math
This resource provides an interactive worksheet with just ten problems as an independent practice or a quick assessment.
Teaching Treasures Publications
Teaching Treasures: Year Eight Timed Mental Math
Improve your computation skills using this timed interactive worksheet.
National Council of Teachers of Mathematics
The Math Forum: Beat the Calculator!
Find more than 500 "mental calculation tricks" that will help you square numbers, add, multiply divide, subtract, and find percentages. A great resource for advance math students, gifted children, and teachers wanting to find ideas for...
Varsity Tutors
Varsity Tutors: Aplus Math: Flashcard Creator
Create and print your own flashcards to practice your basic math facts. Choose either addition, subtraction, multiplication, or division, as well as which sets of numbers you would like to practice. The flashcards come in sets of twelve,...
Varsity Tutors
Varsity Tutors: Aplus Math: Flashcard Creator
Create and print your own flashcards to practice your basic math facts. Choose either addition, subtraction, multiplication, or division, as well as which sets of numbers you would like to practice. The flashcards come in sets of twelve,...
Other
Curious math.com: Math Is an Attitude
This site offers numbers tricks to help multiply and divide large numbers mentally. There are also tricks for powers and roots of numbers.
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...
University of Waterloo (Canada)
University of Waterloo: Powerama 6 D
In this game, you simply divide the two numbers. All exercises are division by 10, 100, 1000, or 10,000, so students can learn quick mental methods of division by powers of ten. The game presents 100 exercises, so students get plenty of...
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.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Estimate the Quotient [Pdf]
This activitiy asks students to randomly select a one-digit divisor and a three-digit dividend and estimate the quotient mentally. Students must then explain why they believe their estimate is accurate.