This site explains how to estimate sums by rounding whole numbers. Games and exercises are provided to practice the skill.

Students can practice estimating sums using front-end estimation in a series of self-check exercises and timed learning games.

This site offers exercises and games for students to practice rounding whole numbers to the nearest ten thousand.

A large selection of teacher resources to help teach and review the concepts of rounding and estimating. There are many worksheets and a few PowerPoint presentations.

Soccer Math: Estimating is a fun way for kids to practice estimating sums, differences, products and quotients. There are different levels of difficulty in each exercise making the game appropriate for a variety of students and grades....

Improve your estimation and rounding skills with these interactive games that are challenging and fun. Excellent skills practice for rounding, estimating sums and differences, and front-end estimation. Links to lesson plans, teacher...

This site explains how to estimate differences by rounding. Games and exercises are provided to practice the skill.

Students can practice estimating sums to the nearest thousand in a series of self-check exercises and timed learning games.

Students can practice estimating differences in a series of self-check exercises and timed learning games.

This lesson explains how to estimate differences between whole numbers. Gives practice and games to practice this skill in a helpful and fun way.

Use rounding to estimate the answer to an addition problem in this online game. As you play the game, running totals of correct and incorrect answers and your score are displayed.

Front-end estimation is explained and demonstrated with an online game at this AAA Math lesson.

In this Max's Math Adventure, estimate pieces of candy with Max, Ruthie, and Pop. Features include a teacher's guide, activity sheet, and extra challenges.

Students "go fishing" and use proportions to learn how estimating is used to determine the size of a population.

This site explains how to estimate sums of whole numbers. Gives practice and games to practice this skill.

This site explains how to round whole numbers to the nearest ten. The information on the site gives exercise problems and games to practice this skill in a fun and helpful way.

Estimating with multiplying decimals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

The learning activity reviews rounding to the nearest hundred. Students answer ten questions and can check their answers when finished.

The lesson explores how to round numbers. Explanations and examples are included in the tutorial.

For example, estimate 12.93 + 6.1 to be 19. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice estimating the length of real life objects using US customary units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice estimating the volume of real life objects using US customary units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

On this interactive site students learn to round numbers to the nearest ten thousand, determine the place value of any digit, and use ordinal numbers.

Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...