Estimate Products of Decimals and Whole Number

Preview

In this chapter you will learn how to estimate products of decimals and whole numbers. This will be helpful for someone who has trouble with finding products.
 For example if you have 55.8x7 the first thing you will do is estimate the decimal number which is 55.8 to its nearest place value so that would be 56. Now our problem will become 56x7 and our answer will be 392.
 To understand this topic better I suggest you watch the video

And try some of these:

 Sheet 1 Practice Problems on Multiplying Decimal Numbers

Learn How to Estimate Products

Introduction

In this lesson, you will learn how to estimate products. Now, estimating means making an educated math guess to get your answer. To estimate the product means to make an educated math guess on the numbers in your problem to get an answer to a multiplication problem. Easy, right?!

Now that you have an idea of what this lesson is about, let's take a look at an example to understand it better. Trust me, it's easy as ABC's!

Examples

Let's say that we have a problem such as 22*36. The first thing we need to do is that we have to estimate the numbers 22 and 36. Since 22 is less than 25, we will round it to 20. And since 36 is greater than 35, we will round it to 40. Now comes the easy part: Just multiply your estimated numbers 20*40. If you are finding this part a little tricky, which is okay, than just remove the zeros, and multiply 2*4 which equals 8. Now just simply add the two zeros you had removed. That means that the estimated product of 22*36 equals 800. 

I know that the above steps seem like a lot of stuff, but it is really simple once you have had enough practice. So, why not try some of these out?!

 Sheet 1 Practice Problems Estimating Products