Presentation Transcript
Slide 1:Objective: Estimate decimal sums, differences, products, and quotients. 3.3 Estimating with Decimals
Slide 2:Number of the Day
Estimate the product of your age in months and the number of days in a month. What does your answer represent?
a x 12 x 30
a = age
Slide 3:Problem of the Day
Randall, Kira, and Sean have 100 baseball cards. Randall has twice as many as Kira and 10 more than Sean. How many cards does each have?
Slide 4:DeAnn made a one-minute call to India, Jordan, and Pakistan. About how much did the three calls cost?
Slide 5:$1.79
$1.87
+$2.17
Slide 6:$1.79
$1.87
+$2.17 $2.00
$2.00
+$2.00
Slide 7:Practice Problems Estimate then find the answer.
6.7 + 9.4 + 15.82
31.5 x 2.8
82.5 ÷ 9.3
185.32 – 101.99
Slide 8:Image Attributions
Slide 1: Image: 'Loosing money'
www.flickr.com/photos/46425925@N00/213430779
Slide 3: Image: 'Baseball Season'
www.flickr.com/photos/12692384@N00/136472519