When figuring significant digits, use this tutorial to help figure out how to deal with zeros. [7:36]

This video shows how to estimate decimal addition in the context of a word problem.

Join Youtube chemistry tutor, Tyler DeWitt, do practice problems to work on significant figures with zeros. [8:09]

This introduction to significant figures discusses basics of multiplication and division. [5:01]

This video illustrates how to round numbers to the nearest place value.

Follow along with this tutorial to see how to use compatible numbers to estimate the percent of a number. [2:27]

This tutorial explains how to calculate percents that are powers of 10. [2:59]

Find out how to round a decimal to a given place value. [4:28]

Video lesson provides practice with estimating the length of an object when given the length of another object. [2:02]

Use estimations to determine the approximate value of a product. Complete assessment to check for understanding.

A video tutorial introduces the concept of order-of-magnitude, and explains how it is used to make estimations in physics. [2:13]

In this lesson, you will learn to estimate the addition of fractions with unlike denominators by using a benchmark fraction. [3:24]

In this lesson, you will learn to check if your answers to story problems are reasonable by using front-end estimation. [4:40]

In this lesson, you will learn how to solve multi-step word problems by using front-end estimation. [4:44]

In this lesson, you will learn how to judge the reasonableness of an answer by estimating. [5:02]

In this lesson, you will learn to estimate solutions to multi-step story problems by rounding. [4:11]

Video tutorial uses examples to reinforce understanding of how to estimate problems involving decimals. [7:16]

In this lesson plan, you will learn to estimate solutions to multi-step story problems by rounding. [4:11]

The teacher uses 2-Step estimation for word problems.

Sal solves a 2-step estimation word problem.

Oscar estimates the size of a very large number and counts by hundreds as he shows off the Odd Squad Ball Room.

Sal Khan solves word problems involving mass and estimating mass. [4:00]

Estimate to find reasonable solutions to decimal division problems.

In this lesson, students will learn what an estimation is and how they can estimate with numbers. It is 5 of 5 in the series titled "Estimating."