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Activity
Teachnology

Teachnology: Arithmetic Theme

For Teachers Pre-K - 1st Standards
Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.
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Activity
Teachnology

Teachnology: Arithmetic Theme

For Teachers Pre-K - 1st Standards
Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.
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Unit Plan
E-learning for Kids

E Learning for Kids: Math: Penguins: Division

For Students 3rd - 5th Standards
This interactive site allows students to practice their division skills. At the end of the lesson students will be able to divide mentally using divisibility tests, solve word problems using division strategies, and use a written...
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Activity
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: Figuras Magicas

For Students 3rd - 8th Standards
Interactive fun activities that could be used in the classroom to practice mental math skills.
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Unit Plan
E-learning for Kids

E Learning for Kids: Math: Llama Farm: Mixed Operations

For Students 5th - 6th Standards
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.
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Interactive
University of Waterloo (Canada)

Math Frog: Arithmagic

For Students 1st - 6th
Practice operations of mental math while the program timer runs.
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Website
AAA Math

Aaa Math: Aaa Math Lessons

For Teachers 3rd - 8th
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"...
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Activity
Teaching Treasures Publications

Teaching Treasures: Year Four Timed Mental Math (Page 2)

For Students 3rd - 5th Standards
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...
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Activity
Teaching Treasures Publications

Teaching Treasures: Year Eight Timed Mental Math

For Students 3rd - 8th Standards
This resource provides an interactive worksheet with just ten problems as an independent practice or a quick assessment.
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Activity
Teaching Treasures Publications

Teaching Treasures: Year Eight Timed Mental Math

For Students 3rd - 8th Standards
Improve your computation skills using this timed interactive worksheet.
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Activity
National Council of Teachers of Mathematics

The Math Forum: Beat the Calculator!

For Students 3rd - 8th
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...
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Unknown Type
Varsity Tutors

Varsity Tutors: Aplus Math: Flashcard Creator

For Students Pre-K - 1st
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,...
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Unknown Type
Varsity Tutors

Varsity Tutors: Aplus Math: Flashcard Creator

For Students Pre-K - 1st
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,...
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Activity
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: Figuras Magicas

For Students 3rd - 8th Standards
In Spanish. This site contains many games for practicing mental numerical calculation of basic operations.
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Unit Plan
Other

Curious math.com: Math Is an Attitude

For Students 9th - 10th Standards
This site offers numbers tricks to help multiply and divide large numbers mentally. There are also tricks for powers and roots of numbers.
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Whiteboard
Topmarks Online

Topmarks: Daily 10

For Teachers K - 1st Standards
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...
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Interactive
University of Waterloo (Canada)

University of Waterloo: Powerama 6 D

For Students 2nd - 8th
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...
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Interactive
Topmarks Online

Topmarks: Loop Cards

For Students K - 1st
Fantastic for improving your mental maths. Similar to dominoes, complete the loop against the clock while practicing addition, subtraction, multiplication, and division.
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Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Estimate the Quotient [Pdf]

For Students 3rd - 5th
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.