Increasing or Decreasing
_is what of _
Percent Error, and Equations
Word Problems
100
Increase
100
12 is what % of 12?
100%
100
Diego measured the length of a pencil to be about 18 cm. The actual length of the pencil is 20 cm. What is the percent error?
10%
100
At the beginning of the month, there were 80 ounces of peanut butter in the pantry. Since then, the family ate 0.3 of the peanut butter. How many ounces of peanut butter are in the pantry now?
a. 0.7* 80
b. 0.3 * 80
c. 80-0.3
d. (1+0.3) 80
A
200
Decrease
200
5 is what % of 10?
50%
200
In a video game, Clare scored 50% more points than Tyler. If c is the number of points that Clare scored and t is the number of points that Tyler scored, which equations are correct?
Select all that apply.
A, E
200
A bicycle is 120 inches long. A car is 75% longer than the bicycle. How long is the car?
210 inches
300
Joe goes to a cafe. His bill is $5. He leaves $5.35.
What did Joe leave and is it increasing or decreasing?
Tip; increasing
300
What is 75% of 100?
75
300
The Bengals were expected to sell 2,750 tickets at their latest football game. They only sold 2,654. What is the percent error? Round to the nearest thousandth.
3.5%
300
Lin's father is paying for a 30$ meal. He has a 20% off coupon for the meal. After the discount, a 7% sales tax is applied. What does Lin's father pay for the meal? Explain or show your reasoning.
25.68
400
State whether increasing or decreasing for both tape diagrams
A- Decreasing
B-Increasing
400
What is 100% of 180?
180
400
A soccer field is 122 yards long. Han measures the length of the field using a 30-ft long tape measure and gets a measurement of 358 feet, 10 inches. What is the amount of error?
86 inches
400
The store bought a pair of shoes for $40, and sold it for $80. What percentage was the markup?
150%
500
Diego bought x pounds of almonds. Lin bought ¼ of that.
Decreasing
500
10 is what % of 50?
20%
500
A soccer field is 122 yards long. Han measures the length of the field using a 30ft long tape measure and gets a measurement of 358 feet, 10 inches. What is the percent error?
86 inches/4392 inches=.0195=1.95%
500
Draw a diagram to represent each situation:
a. The number of miles driven this month was a 30% decrease of the number of miles driven last month.