This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.

[Free Registration/Login may be required to access all resource tools.] Add and subtract fractions and mixed numbers with like and unlike denominators

[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers to determine which number sentence matches the correct solution. The video is followed by a series of...

In this lesson plan, 7th graders add and subtract rational numbers to solve word problems.

In this lesson plan, 7th graders add and subtract rational numbers on a number line.

Practice solving problems like 452 + 241. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Subtract with 2 numbers less than 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding 3 numbers. All numbers in these problems are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding two-digit numbers. All numbers in these problems are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding. All numbers in these problems are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving problems like 45 - 24. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice matching addition and subtraction equations to real-world scenarios. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving problems like 46-9. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice subtracting 2-digit numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding numbers like 45+8. 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 solving word problems by adding or subtracting decimal numbers. 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.] The video shows how to answer a series of addition or subtraction problems with numbers up to 1,000. The video is followed by practice problems.

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In this short Cyberchase video, students learn about positive and negative numbers as Harry tries to score a total of 50 points in various events to qualify for the Northern Hemisphere games in New Orleans. [3:24]

From basics such as adding and subtracting money, converting coins, and making change to more advanced topics such as sales tax and simple interest, this interactive tutorial offers help with consumer math issues.

Spider Match is a multi-player game that allows students from anywhere in the world to compete against one another while practicing adding and subtracting integers!

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.

Second graders increase their understanding of place value by manipulating larger numbers.