1 / 9

Estimating Sums and Differences

Estimating Sums and Differences. Estimate A number close to an exact value. An estimate indicates “ABOUT HOW MUCH.” Compatible numbers-Numbers in a problem that ar e easily to work with mentally. When estimating, round to the highest place value of the smaller number.

keahi
Download Presentation

Estimating Sums and Differences

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. Estimating Sums and Differences

  2. Estimate A number close to an exact value. An estimate indicates “ABOUT HOW MUCH.” Compatible numbers-Numbers in a problem that are easily to work with mentally. When estimating, round to the highest place value of the smaller number. KEY WORDS ESTIMATE=ABOUT

  3. Cut and paste for journals

  4. Let’s practice!

  5. Practice with your partner

  6. Examples: Round to the nearest ? 456 1,554 + 48 + 623

  7. 258 7,258 + 62 - 145 Round to the nearest ? 368 9,852 + 41 - 741

  8. Estimating Round to the nearest 10/use the last two digits. Round to the nearest 100, use the last three digits. Round to the nearest 1000, use the last four digits. hundreds thousands tens ones 15,528 15,528 15,530 15,528 15,500 15,528 16,500

  9. Rounding Round Up

More Related