Understanding Unit Rates with Decimals

In this video, Mr. J explains unit rates with decimals, focusing on how they compare quantities with different units. He provides two examples: calculating miles per hour and dollars spent per day. The video emphasizes the importance of order in rates and demonstrates how to convert rates into unit rates by ensuring the denominator is one. Mr. J guides viewers through the process of dividing both the numerator and denominator to maintain equivalence and proportionality, ultimately helping viewers understand how to express unit rates in fractional form.

What is a unit rate?

• A rate with a denominator of one

• A rate with a numerator of one

• A rate comparing two similar units

• A rate that does not involve decimals

In the example of 37.8 miles in 3.5 hours, what is the first step to find the unit rate?

• Divide both numbers by 3.5

• Multiply both numbers by 3.5

• Add both numbers together

• Subtract 3.5 from 37.8

What is the unit rate for 37.8 miles in 3.5 hours?

• 11.8 miles per hour

• 9.8 miles per hour

• 13.5 miles per hour

• 10.8 miles per hour

Why is it important to maintain the order of units when calculating unit rates?

• To avoid using decimals

• To simplify the units

• To make the calculation easier

• To ensure the rate is accurate

In the example of $27.75 spent in 7 days, what is the first step to find the unit rate?

• Add both numbers together

• Divide both numbers by 7

• Multiply both numbers by 7

• Subtract 7 from 27.75

What is the unit rate for $27.75 spent in 7 days?

• $18.25 per day

• $4.25 per day

• $3.95 per day

• $3.75 per day

What does a unit rate with a denominator of one represent?

• The rate per two units

• The rate per ten units

• The rate per one unit

• The rate per hundred units

How do you ensure that the unit rate calculation remains proportional?

• By multiplying both the numerator and denominator by different numbers

• By adding the same number to both the numerator and denominator

• By subtracting the same number from both the numerator and denominator

• By dividing both the numerator and denominator by the same number

What is the significance of labeling units in rates and unit rates?

• To make the calculation more complex

• To simplify the calculation

• To differentiate between the units being compared

• To avoid using decimals

What is the final step in finding a unit rate?

• Writing the rate in fractional form

• Subtracting the rate from another rate

• Multiplying the rate by a constant

• Adding the rate to another rate