Estimating to Solve Problems
-
Upload
remedios-graves -
Category
Documents
-
view
42 -
download
7
description
Transcript of Estimating to Solve Problems
![Page 1: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/1.jpg)
Estimating to Solve Problems
Lesson 7
![Page 2: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/2.jpg)
Why use estimation?
When solving problems, sometimes an exact answer isn’t needed. Amounts may be rounded and estimation used to calculate a solution.
![Page 3: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/3.jpg)
Place Value
1,234,567,890.123456
![Page 4: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/4.jpg)
What is the value of the 8 in each number?
1,378,12480,123,567321.05378103,21851.81261,085,241.4
![Page 5: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/5.jpg)
How to Round
If the digit following the indicated level of rounding is Less than 5…
5 or greater…
![Page 6: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/6.jpg)
Round to the indicated value.
752 (tens)6,555 (hundreds)752,357 (ten thousands)651.5021 (ones)635 (tens)75,500 (thousands)852.157 (hundredths)65.15 (tenths)
![Page 7: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/7.jpg)
Is it better to over estimate or under estimate?
Ms. Brown has 3 errands to run before a dentist appointment at 10:00 a.m.. To figure out when she should leave her house should she underestimate or overestimate the total time it will take to run these errands?
![Page 8: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/8.jpg)
Is it better to over estimate or under estimate?
Bill wants to buy a new mountain bike which sells for $375. He wants to estimate how long it will take him to save the money he needs based on his weekly earnings from his paper route. Should he underestimate or overestimate his weekly earnings?
![Page 9: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/9.jpg)
Is it better to over estimate or under estimate?
Mary is going to order the fabric for her bridesmaids dresses. Should she underestimate or overestimate the amount she needs for each dress?
![Page 10: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/10.jpg)
On-Line Help
Estimation Practice (Basketball Simulation)Practice ProblemsEstimation GolfEstimator Game for Two (Four Square)
![Page 11: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/11.jpg)
Using Estimation
Josh’s pulse rate was taken at 5 different times. The rates were 92, 88, 87, 86, and 97. What was his average pulse rate?
![Page 12: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/12.jpg)
The scores of 4 students on a recent test were 67, 75, 83, 92, and 100.
Estimate the average score.
![Page 13: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/13.jpg)
AdmissionsThe group of 5 adults and 6 children purchased daily tickets for the Blackpool Zoo. Estimate the total spent on the tickets.
![Page 14: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/14.jpg)
Perimeter and Area
3.87 ft
4.218 ft
Estimate the perimeter of the rectangle to the left.
Estimate the area of the rectangle.
![Page 15: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/15.jpg)
Jogging
Marisol jogged 3.82 miles Monday, 2.15 miles Tuesday, 3.165 miles Wednesday, and 1.52 miles Friday. Estimate the number of miles did Marisol jog that week.
![Page 16: Estimating to Solve Problems](https://reader035.fdocuments.in/reader035/viewer/2022081504/56813116550346895d976fdd/html5/thumbnails/16.jpg)