University of Cambridge
University of Cambridge: Nrich: 2, 4, 6, 8
On this one page website sharpen your logic, addition, and subtraction skills while working on this challenge. The solution is available to double check your solution.
Ducksters
Ducksters: Practice Math Questions
A collection of practice math questions from addition to division.
Ducksters
Ducksters: Practice Math Answers: Double Digit Addition
A website that gives practice problems for double-digit addition.
Teachnology
Teachnology: Addition and Subtraction Teaching Theme
Addition and Subtraction Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition and subtraction skills.
Fun Brain
Fun Brain: Math Car Racing Game
Players must choose the mathematical expression with the highest value to win. Tests understanding of basic arithmetic skills involving the addition, subtraction, multiplication, and division of whole numbers.
Math Slice
Math Slice: 60 Seconds
Students can practice developing speed as they see how many addition, subtraction, multiplication or division questions they can solve in sixty seconds.
Other
Gynzy: Pacman: Math Practice
This is an interactive math practice. Students select what they want to practice with addition, subtraction, and multiplication.
Math Aids
Math Aids: Multiplication Worksheets
Great resource to practice and strengthen math skills pertaining to multiplication. Math worksheets are printable, may be customized, and include answer keys.
Other
Math Stories: Write a Number Sentence
At this one page site you can work through step by step a sample problem that illustrates the problem solving strategy for "Write a number sentence." The answer is right there to help you check your thinking.
Quia
Quia: Addition Concentration Sums 10 to 18
This website for young children gives them practice adding sums from 10 to 18 in a concentration game type format.
Quia
Quia: Addition Matching Sums 0 to 9
This website for young children gives them practice adding sums from 0 to 9 in a matching type format.
Quia
Quia: Addition Flashcards Sums 0 to 9
This website for young children gives them practice adding sums from 0 to 9 in a flashcard type format.
Quia
Quia: Addition Concentration Sums 0 to 9
This website for young children gives them practice adding sums from 0 to 9 in a concentration game type format.