consumer math slides january 8, 2008
DESCRIPTION
More on scale factors and review of perimeter, area, and volume.TRANSCRIPT
![Page 1: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/1.jpg)
Scale Factors
A scale model of Chichen Itza
![Page 2: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/2.jpg)
891
Find the hourly rate of pay for each of the following 3 questions:
(1) $42.00 for 4 hours of work. $10.50
(2) $15.50 for 5 hours of work. $3.10
(3) $30.25 for 5 hours of work. $6.05
Find the unit rate of speed for each of the following 2 questions:
(4) 120 km in 4 hours 30 km/hr
(5) 35 km in 1/2 hours 70 km/hr
(6) Find 25% of 124 31
(7) Find 25% of 110 27.5
(8) Terry’s account has $400 in it. Terry deposits $150 and withdraws $25. How much is left in the account?
$525.00
(9) The only item that is different on your transaction record as compared with your bank statement is a “service charge.” Which shows a larger balance, your transaction record or your bank statement?
transaction record
(10) What is 81 x 11?
Mental Math
![Page 3: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/3.jpg)
Calculate the surface area of each box.
![Page 4: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/4.jpg)
Calculate the volume of each box.
![Page 5: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/5.jpg)
Calculate the perimeter of each figure below.
![Page 6: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/6.jpg)
Calculate the area of each figure.
![Page 7: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/7.jpg)
A model house has dimensions that measure 2 cm x 1 cm x 1.5 cm (width x length x height). If the scale of the model is 1:100, what are the dimensions of the (actual) full house?
What is the volume of the house in the model?
What is the volume of the actual house?
How do the volumes compare?
![Page 8: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/8.jpg)
A model house has a back yard that measures 2 cm x 2 cm. If the scale of the model is 1:100, what are the dimensions of the (actual) full sized yard?
What is the area of the yard in the model?
What is the area of the actual yard?
How do the areas compare?
![Page 9: Consumer Math Slides January 8, 2008](https://reader031.vdocuments.site/reader031/viewer/2022020217/54785bd25906b57d318b47c6/html5/thumbnails/9.jpg)
A Summary of Scale Factor Effects on Area and Volume
Scale Factor Length Area Volume
Examples
Effect on:
2
3
5
10