The document contains math problems about calculating percent change. It asks students to find the percent increase or decrease in various scenarios, such as finding the percent increase from 4 to 7.5 or the percent decrease from 1,500 to 1,416. It also provides data on annual municipal solid waste production in the United States from 1960 to 2000 and asks students to calculate the percent increase from 1960 to 1990.

1. 6.8 percent change January 17, 2012
Bellwork
Write each decimal as a percent.
1) 0.46
2) 2.47
3) 0.03
Objective: find percent increase and decrease
HW pg. 327 #4­26 evens 1

2. 6.8 percent change January 17, 2012
amount of change
Percent Change =
original amount
Find the percent increase from 4 to 7.5.
Find the percent increase from 100 to 114.
HW pg. 327 #4­26 evens 2

3. 6.8 percent change January 17, 2012
The annual production of municipal solid waste in the United States has more than doubled since 1960.
Find the percent of increase from 1960 to 1990. Municipal Solid Waste
1960 1970 1980 1990 2000
88 121 152 205 232
million million million million million
tons tons tons tons tons
HW pg. 327 #4­26 evens 3

4. 6.8 percent change January 17, 2012
Find the percent decrease from 1,500 to 1,416.
Find the percent decrease from 854.5 to 60.6.
HW pg. 327 #4­26 evens 4

5. 6.8 percent change January 17, 2012
Find the percent change. Tell whether is is an increase or decrease.
from 50 to 45
from 12 to 15
HW pg. 327 #4­26 evens 5

6. 6.8 percent change January 17, 2012
HW pg. 327 #4­26 evens
HW pg. 327 #4­26 evens 6