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


  1. 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 ΒΌ 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.