1 / 1

Estimation with Division using compatible numbers: Round the divisor to its greatest place.

Estimation with Division using compatible numbers: Round the divisor to its greatest place. Change the dividend to the closest multiple of the divisor. Do the basic division fact. Zap each 0 on the divisor that you can zap on the dividend.

yuma
Télécharger la présentation

Estimation with Division using compatible numbers: Round the divisor to its greatest place.

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. Estimation with Division using compatible numbers: • Round the divisor to its greatest place. • Change the dividend to the closest multiple of the divisor. • Do the basic division fact. • Zap each 0 on the divisor that you can zap on the dividend. • Tack any 0’s that are left on the dividend onto the quotient. • ex. 71,345 ÷ 82 ≈ • Round the 82 ≈ 80. • Think of the multiple of 8 that is closest to 71, that ‘s 72 ! • Replace the 71,345 with 72,000. • Think, “How many times will 8 divide into 72?” 9 is the answer. • How many 0’s are on the divisor? 1 • Zap 1 zero from the divisor and dividend. • Tack the 2 zeros left on the dividend to the quotient (answer). • Final answer 71,345 ÷ 82 ≈ 72,000 ÷ 80 ≈ 900 • ex. 3,546 ÷ 39 ≈ 3,600 ÷ 40 ≈ 90 • 203,651 ÷ 713 ≈ 210,000 ÷ 700 ≈ 300

More Related