Ratio and Unit Rates

​Ratios (Parts&Whole) and Unit Rates

​Determining the Whole with a Double Number Line

​Remember:

If you are looking for a part, you multiply the percent and the total.


If you are looking for the total, you divide the given value by the percent.

Math Response

If $240 is 60% of the homeroom goal, what is 100% of the goal?

Type answer here

Correct Answer: 400

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Math Response

If $144 is 60% of the homeroom 6B goal, what is 100% of the goal?

Type answer here

Correct Answer: 240

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Math Response

If $360 is 100% of the homeroom 6C goal, what is 60% of the goal?

Type answer here

Correct Answer: 216

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​Unit Rates

​A unit rate is a comparison of two measurements in which the numerator or denominator has a value of one unit. One way to compare the values of items is to calculate the unit rate for each item.

​The larger bottle is $0.40 per fluid ounce.

The smaller bottle is $0.33 per fluid ounce.

​The larger bottle has 2.5 fluid ounces per dollar.

The smaller bottle has 3 fluid ounces per dollar.

Math Response

If a bottle of 250 vitamins costs $12.50. How much does each vitamins cost?

Type answer here

Correct Answer: 0.05

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Math Response

If a bottle of 250 vitamins costs $12.50.

How many vitamins are there in a dollar?

Type answer here

Correct Answer: 20

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Math Response

A pack of 40 AAA batteries costs $20.

How much does each battery cost?

Type answer here

Correct Answer: 0.5

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Math Response

A pack of 40 AAA batteries costs $20.

How many batteries are there per dollar?

Type answer here

Correct Answer: 2

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Math Response

A package of 24 rolls of toilet paper costs $18. How much does each roll costs?

Type answer here

Correct Answer: 0.75

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Math Response

A package of 24 rolls of toilet paper costs $12. How many rolls are there per dollar?

Type answer here

Correct Answer: 2

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Math Response

A box of 500 business cards costs $20.

How many business cards do you have per dollar?

Type answer here

Correct Answer: 25

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