1 / 6

Lesson 2-3

Lesson 2-3. Estimating Sums and Differences. Front End Estimation. The process of looking at the front digit of a number and estimating to find the sum or difference. What is the front digit of the following numbers? 1,248 + 2,579 ______. Using Front End Estimation to Estimate Sums.

amalie
Download Presentation

Lesson 2-3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson 2-3 Estimating Sums and Differences

  2. Front End Estimation The process of looking at the front digit of a number and estimating to find the sum or difference. What is the front digit of the following numbers? 1,248 + 2,579 ______

  3. UsingFront End Estimation to Estimate Sums 1,329+388= 1,329 becomes 388 becomes Now Estimate:

  4. UsingFront End Estimation to Estimate Sums Estimate the sum using front end estimation 788 32,910 + 122 + 4,085 ______ _______

  5. UsingFront End Estimation to Estimate Differences 3,635-1,498= 3,635 becomes 1,498 becomes Now Estimate:

  6. UsingFront End Estimation to Estimate Differences Estimate the difference using front end estimation. 9,245 65,328 - 4,033 - 14,231 ______ _______

More Related