Estimation and Rounding

How Do You Use Front-End Estimation to Estimate a Sum of Several Decimals?

Front-end estimation can be a great way to approximate a sum. In this tutorial, you'll see how to use front-end estimation to approximate the cost of school supplies!
How Do You Round a Decimal to a Given Place Value?

Sometimes, decimals are so long that you need a way to estimate the value of the decimal. Other times, you may only need a certain amount of exactness to get your answer. This is where rounding decimals to a chosen place can be very helpful! Watch this tutorial to learn how to round a decimal to a chosen place.
How Do You Estimate a Quotient Using Compatible Numbers?

Sometimes you don't need to find an exact answer to a problem, and an approximation will work just fine. In this tutorial, see how to estimate the quotient of a division problem by first finding compatible numbers. Take a look!
What is Place Value?

Did you know numbers have place values? This tutorial introduces you to the term place value and shows you some of the most seen place values. Take a look!