Survival Rates and Percent Changes

Survival Rates and Percent Changes

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial covers various mathematical concepts related to percentages, including percent increase and decrease, inflation's impact on dollar value, survival rates of salmon through turbines, price calculations involving discounts and markups, and population growth. It also explains the percent change formula and its application in different scenarios.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the value of a dollar decreases by 3.2% annually, what would be its value after one year if it started at $1?

$0.95

$0.968

$0.99

$0.97

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the value of a dollar after multiple years of depreciation?

Add the depreciation rate to the initial value for each year

Multiply the initial value by the depreciation rate for each year

Divide the initial value by the depreciation rate for each year

Subtract the depreciation rate from the initial value for each year

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the survival rate of salmon after passing through one turbine if 12% are killed?

78%

88%

85%

90%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If 1000 salmon start their journey, how many are expected to survive after passing through 8 turbines?

500

400

360

600

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A pair of shoes is on sale for $33, which is 40% of the original price. What was the original price?

$70

$80

$60

$55

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a store marks up a product by 40%, what is the new price if the original price was $75?

$115

$110

$100

$105

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the percent change between two values?

Subtract the smaller value from the larger value, divide by the original value, and multiply by 100

Add the two values, divide by the original value, and multiply by 100

Multiply the two values, divide by the original value, and multiply by 100

Subtract the larger value from the smaller value, divide by the new value, and multiply by 100

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