1 / 9

DO NOW

DO NOW. Write the numbers in order from least to greatest 8.54 8.45 8.05 8.40 81+15 10x11 83,972-41,023 Name the value of the underlined digit 5 87,119,862,467. Estimation. September 9, 2013. What is it. Estimation- number close to an exact value, tells about how much. Easy numbers.

megara
Download Presentation

DO NOW

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. DO NOW • Write the numbers in order from least to greatest 8.54 8.45 8.05 8.40 • 81+15 • 10x11 • 83,972-41,023 • Name the value of the underlined digit 587,119,862,467

  2. Estimation September 9, 2013

  3. What is it • Estimation- number close to an exact value, tells about how much. • Easy numbers

  4. Compatible numbers • Compatible numbers- are numbers that are easy to add or subtract mentally.

  5. Rounding • Rounding-To find the approximate value of a number. • 6.38 is rounded to the nearest tenth 6.4

  6. Practice • 28+13 • 598-103 • 10.08+5.6 • 2,521-1,247

  7. Estimation and compatible numbers • The world’s largest cherry pie weighed 37,740 pounds. The world’s largest apple pie weighed 30,115 pounds. About how much more did the cherry pie weigh?

  8. Practice • About how much faster is the foxbat than the hawkeye? • Hawkeye- 375 • Foxbat- 1,864

  9. More Practice • Sophia has $20.00. She buys a hair band for $3.99, gum for $1.29, and a brush for $6.75. Not including tax, estimate how much change Sophia should receive.

More Related