Practice solving problems like 34+1 and 34+10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding three-digit numbers. All sums are 1000 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, and ask for hints.

Practice solving problems like 243 + 452. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice seeing how addition and subtraction are related. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving problems like 34+5 and 34+50. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice making groups of 10 and 100 while adding 3-digit numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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[Free Registration/Login may be required to access all resource tools.] A collection of resources that explain complex numbers and how to do arithmetic with them.

Practice solving word problems by finding how many more (or fewer) objects there are. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice your mental math skills with this site, where practice problems in addition, subtraction, multiplication, and division abound. Introductory, intermediate, and advanced levels are available. Just type in your answer and you'll...

Practice working through addition and subtraction problems using the number line. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] Learn how to simplify expressions involving the addition and subtraction of radicals.

This task challenges a student to demonstrate fluency in adding and subtracting whole numbers.

Red apples, orange candles, yellow stars, green frogs, and blue, indigo, and violet flowers-they all add up to Rainbow Math fun! During this adventure children learn the colors of the rainbow as they practice counting, adding and...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students must follow the order of operations to solve an equation with several operations where one sign is missing. Includes video...

In this exercise, students practice subtracting decimals. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.