6.5 Percentage Increase and Decrease

6.5 Percentage Increase and Decrease

In this lesson, you will
● find percents of increase.
● find percents of decrease.

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Starter Notes

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Example Notes

4

Find the new amount.
70 meters increased by 80%

4

Find the new amount.

150 grams decreased by 74%

4

Find the new amount.

120 pounds decreased 5%

4

Find the new amount.

40 liters increased by 25%

4

Example Notes

4

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.
50 pounds to 35 pounds

Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

4

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary
10 gallons to 24 gallons
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

4

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

16 centimeters to 44.2 centimeters

Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

4

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

75 people to 25 people
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

4

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

24 songs to 78 songs
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

4

Example Notes

4

You estimate that a baby pig weighs 20 pounds. The actual weight of the baby pig is 16 pounds.

Find the percent error.

4

You estimate that 200 people attended a school concert. The actual attendance was 240 people.
Find the percent error to the nearest tenth of a percent.

4

You estimate that 200 people attended a school concert. The actual attendance was 240 people.

What other estimate gives the same percent error? Explain your reasoning.

0

Complete the sentence.

• Writing Prompt: To find the percent of change…

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Give yourself a rating on the first lesson objective

I can find the percent of increase including difficult percents that need to be rounded

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6.5 Percentage Increase and Decrease

6.5 Percentage Increase and Decrease

Starter Notes

Example Notes

Find the new amount.70 meters increased by 80%

Find the new amount.150 grams decreased by 74%

Find the new amount.120 pounds decreased 5%

Find the new amount.40 liters increased by 25%

Example Notes

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary. 50 pounds to 35 poundsWrite your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary 10 gallons to 24 gallons Write your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.16 centimeters to 44.2 centimetersWrite your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary. 75 people to 25 people Write your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.24 songs to 78 songs Write your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Example Notes

You estimate that a baby pig weighs 20 pounds. The actual weight of the baby pig is 16 pounds. Find the percent error.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.Find the percent error to the nearest tenth of a percent.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.What other estimate gives the same percent error? Explain your reasoning.

Complete the sentence. • Writing Prompt: To find the percent of change…

Give yourself a rating on the first lesson objectiveI can find the percent of increase including difficult percents that need to be rounded

Give yourself a rating on the second lesson objectiveI can find the percent of decrease including difficult percents that need to be rounded

6.5 Percentage Increase and Decrease

Starter Notes

Example Notes

Find the new amount.70 meters increased by 80%

Find the new amount.150 grams decreased by 74%

Find the new amount.120 pounds decreased 5%

Find the new amount.40 liters increased by 25%

Example Notes

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary. 50 pounds to 35 poundsWrite your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary 10 gallons to 24 gallons Write your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.16 centimeters to 44.2 centimetersWrite your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary. 75 people to 25 people Write your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.24 songs to 78 songs Write your answer in the following format. increase/decrease comma space percent %e.g. Increase, 12%

Example Notes

You estimate that a baby pig weighs 20 pounds. The actual weight of the baby pig is 16 pounds. Find the percent error.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.Find the percent error to the nearest tenth of a percent.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.What other estimate gives the same percent error? Explain your reasoning.

Complete the sentence. • Writing Prompt: To find the percent of change…

Give yourself a rating on the first lesson objectiveI can find the percent of increase including difficult percents that need to be rounded

Give yourself a rating on the second lesson objectiveI can find the percent of decrease including difficult percents that need to be rounded

Find the new amount.
70 meters increased by 80%

Find the new amount.

150 grams decreased by 74%

Find the new amount.

120 pounds decreased 5%

Find the new amount.

40 liters increased by 25%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.
50 pounds to 35 pounds

Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary
10 gallons to 24 gallons
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

16 centimeters to 44.2 centimeters

Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

75 people to 25 people
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

24 songs to 78 songs
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

You estimate that a baby pig weighs 20 pounds. The actual weight of the baby pig is 16 pounds.

Find the percent error.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.
Find the percent error to the nearest tenth of a percent.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.

What other estimate gives the same percent error? Explain your reasoning.

Complete the sentence.

• Writing Prompt: To find the percent of change…

Give yourself a rating on the first lesson objective

I can find the percent of increase including difficult percents that need to be rounded

Give yourself a rating on the second lesson objective

I can find the percent of decrease including difficult percents that need to be rounded

Find the new amount.
70 meters increased by 80%

Find the new amount.

150 grams decreased by 74%

Find the new amount.

120 pounds decreased 5%

Find the new amount.

40 liters increased by 25%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.
50 pounds to 35 pounds

Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary
10 gallons to 24 gallons
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

16 centimeters to 44.2 centimeters

Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

75 people to 25 people
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary.

24 songs to 78 songs
Write your answer in the following format. increase/decrease comma space percent %
e.g. Increase, 12%

You estimate that a baby pig weighs 20 pounds. The actual weight of the baby pig is 16 pounds.

Find the percent error.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.
Find the percent error to the nearest tenth of a percent.

You estimate that 200 people attended a school concert. The actual attendance was 240 people.

What other estimate gives the same percent error? Explain your reasoning.

Complete the sentence.

• Writing Prompt: To find the percent of change…

Give yourself a rating on the first lesson objective

I can find the percent of increase including difficult percents that need to be rounded

Give yourself a rating on the second lesson objective

I can find the percent of decrease including difficult percents that need to be rounded