Mastering Ratios, Rates, and Unit Rates

What is the unit rate if a 14-ounce box of Cheerios costs $3.99?

• 0.28 cents per ounce

• 0.29 cents per ounce

• 0.14 cents per ounce

• 0.39 cents per ounce

If the price of a 14-ounce box of Cheerios increases to $4.99, what is the new unit rate?

• 0.49 cents per ounce

• 0.39 cents per ounce

• 0.29 cents per ounce

• 0.36 cents per ounce

How many words can Mickey type per minute if she types 120 words in 3 minutes?

• 50 words per minute

• 40 words per minute

• 30 words per minute

• 60 words per minute

Which is the better buy: a 16-ounce box of cereal for $5.49 or a 20-ounce box for $5.99?

• 20-ounce box

• Cannot be determined

• Both are the same

• 16-ounce box

What is the formula for density?

• Volume divided by mass

• Volume multiplied by mass

• Mass divided by volume

• Mass multiplied by volume

What is the density of silver if it has a mass of 41,960 kg and a volume of 4 cubic meters?

• 9,000 kg per cubic meter

• 11,000 kg per cubic meter

• 10,000 kg per cubic meter

• 10,490 kg per cubic meter

What is the volume of aluminum if it weighs 1,350 kg and has a density of 2,700 kg per cubic meter?

• 1 cubic meter

• 2 cubic meters

• 0.25 cubic meters

• 0.5 cubic meters

How do you calculate the density of a material?

• Divide the mass by the volume

• Multiply the mass by the volume

• Subtract the volume from the mass

• Add the mass and the volume

If the volume of a material is less than 1 cubic meter, what should you do to find the density?

• Multiply the volume by 2

• Divide the mass by the volume

• Multiply both the mass and volume by 2

• Divide the volume by 2

Which material is denser: silver or aluminum?

• Silver

• Aluminum

• Both are equally dense

• Cannot be determined