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....

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

[Free Registration/Login may be required to access all resource tools.] Estimate sums and differences by rounding decimals to whole numbers.

[Free Registration/Login may be required to access all resource tools.] A video and practice questions where students are presented with a decimal number and must round it to three different decimal place value positions. [2:14]

Students explore different rounding scenarios. Aligns with CCSS.Math.Content.3.NBT.A.1 Use place value understanding to round whole numbers to the nearest 10 or 100.

Soccer Math: Rounding provides a fun way for kids to practice rounding numbers. There are three different levels of difficulty: 1.Tens & Hundreds 2.Tens, Hundreds & Thousands 3.Tens, Hundreds, Thousands & Decimals Get five...

In this activity, students will round fractions and mixed numbers, and then use their rounding skills to estimate sums, differences, products, and quotients.

Use Glencoe's randomly generated self-checking quiz to test your knowledge of estimating sums and differences. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...

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...

[Free Registration/Login Required] This flipchart is designed to teach third grade students the steps in estimating sums and differences. It also reviews rounding numbers to the nearest ten and hundred.

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

[Free Registration/Login Required] This flipchart is an Activote lesson for assessing students understanding of estimating sums and differences.

Estimate sums and differences for positive proper fractions, n/d (numerator/denominator). Use rounding to estimate answers when adding or subtracting proper fractions.

Problem solving will become a little easier when you understand the concepts of estimation and rounding. Explore how these concepts are used in mathematics and real world applications. Detailed examples and links to related games...

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

For this week's Afterschool Adventure, children will explore simple math activities using the numbers one through ten. Children will represent numbers in different ways, such as drawing quantities; writing numerals; and using number...

This site gives many different summation formulas and their expansions. Very Comprehensive site

[Free Registration/Login may be required to access all resource tools.] Round whole numbers in order to estimate sums and differences.

Use this NOVA lesson to discuss the nature of time and the grandfather paradox. Examine time from different perspectives by plotting ages on a timeline, estimating how long a minute is and imagining going back in time to change something...

Scholastic has put together 100th day math ideas from several different teachers. Includes "zero, my hero", probability, sorting, measuring, estimating, counting, weighing, money, and other ideas for celebrating the 100th day.

[Free Registration/Login may be required to access all resource tools.] Round fractions and mixed numbers in order to estimate sums and differences.

Lesson plan which details how to have students determine the distance to an object by sighting it from two different locations and knowing the distance between these locations. As an advanced alternative, trigonometry can be used to...

This applet game for two allows you to practice estimating at several different levels of accuracy. You can choose whole number addition, multiplication, percentages or any combination of the three.

A large collection of teacher resources dealing with decimals at many different levels. There are worksheets, PowerPoints, smartboard presentations, Excel, Word, and pdf files for the teacher's use.