Grade 7 Percent Increase and Decrease Practice Test

Correct answer: A

The correct answer is $20\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The increase is 10. Divide by the original value: $\frac{60-50}{50}=\frac{10}{50}=0.20=20\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: B

The correct answer is $15\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The decrease is 12. Divide by the original value: $\frac{80-68}{80}=\frac{12}{80}=0.15=15\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: C

The correct answer is $25\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The increase is 30, and $\frac{30}{120}=0.25=25\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: D

The correct answer is $15\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The decrease is 30, and $\frac{30}{200}=0.15=15\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: A

The correct answer is $25\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The increase is 10. Relative to 40, $\frac{10}{40}=0.25=25\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: B

The correct answer is $20\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The increase is 15, and $\frac{15}{75}=0.20=20\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: C

The correct answer is $25\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The decrease is 16, and $\frac{16}{64}=0.25=25\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: D

The correct answer is $20\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The increase is 60, and $\frac{60}{300}=0.20=20\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: A

The correct answer is $20\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The decrease is 18, and $\frac{18}{90}=0.20=20\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.

Correct answer: B

The correct answer is $25\%$.

1. Identify the original and new values: Determine which value is the original amount, which is the new amount, and whether the change is an increase or a decrease.
2. Apply the percent relationship: The increase is 40, and $\frac{40}{160}=0.25=25\%$.
3. Check the result: Use the original value as the denominator for percent change and verify the direction and size of the change.