Percentage Increase and Decrease
The number of students in a class dropped from 36 to 27. What was the percent decrease?
25%
25% of 200
50
Lisa drew a scale drawing of a house and its lot. She used the scale
1 inch : 3 feet
. The backyard is 39 feet wide in real life. How wide is the yard in the drawing?
13 inches
35/100
0.35
what % of 200 is 50
0.25
The number of m & m's in a bag was increased from 40 to 48. What was the percent increase?
20%
30% of 60
200
Victor measured a city park and made a scale drawing. The soccer field is 23 millimeters long in the drawing. The actual field is 115 meters long. What is the scale of the drawing?
5 meters
26/100
0.26
What % of 300 is 90
3.3
The government decreased the amount of greenhouse gasses allowed to be put out by cars from 12 ppm to 6 ppm. What was the percent decrease?
50%
35% of 80
28
orWatch a videoNora measured a neighborhood park and made a scale drawing. A soccer field in the park is 27 inches long in the drawing. The actual field is 108 yards long. What scale did Nora use for the drawing?
4 Yards
60/100
0.60
What % of 100 is 6
16.6
A math students answered 20 questions right on his first quiz and 26 questions right on his second quiz. What was the percent increase?
30%
60% of 90
54
Camilla drew a scale drawing of a house and its lot. In real life, the back patio is 27 meters long. It is 3 millimeters long in the drawing. What scale did Camilla use?
9 meters
10/100
0.10
What % of 300 is 7
42.8
One week a student spent 150 minutes on her cell phone. The next week she spent 210 minutes on her cell phone. What was the percent increase?
40%
18% of 36
6.48
Jenna measured a swimming pool and made a scale drawing. The pool is 20 centimeters long in the drawing. The actual pool is 40 meters long. What scale did Jenna use for the drawing?
2 meters
76/100
0.76
What % of 500 is 60
8.3