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"...
Educaplus (Jesús Peñas Cano)
Educaplus: Puzzle Algebraico
In this activity you can practice mental math by finding the value of each of the objects with the help of the given pictures.
E-learning for Kids
E Learning for Kids: Math: Igloo: Addition
It takes a lot of math to build an Igloo. Can you help Kirima? Students will learn to select and apply appropriate mental, written or calculator strategies to solve addition problems.
Instituto Latinoamericano de la Comunicacion Educativa
Red Escolar: Problemas De Entrenamiento Para El Entretenimiento
In Spanish. This site is aimed at those who enjoy solving problems. You will find a collection of Arithmetic and Geometry problems which present some challenges and are interesting and fun.
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.
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.
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.
Can Teach
Can Teach: Who Has More or Less?
Want to practice addition and subtraction skills in a new and exciting way? Use this online math lesson card game activity.
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,...
Khan Academy
Khan Academy: Add and Subtract Fractions: Word Problems
In this exercise, students practice adding and subtracting fractions with unlike denominators word problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Queen's Printer for Ontario
E workshop.on.ca: Effective Instr'n in Math, K 6: Multidigit Computation [Pdf]
Volume 5 in an eworkshop Guide to Effective Instruction in Math outlines and illustrates instructional strategies for teach basic facts and multidigit computation to students in kindergarten through grade 6.
AAA Math
Aaa Math: Adding Tens
This game helps you practice adding tens. You will get to see a percent score of the answers you have correct, as well as running totals of the answers you have correct and incorrect.