Unit 2 Advanced Review

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if a car travels 60 miles in 1 hour, the unit rate is 60 miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the unit rate from a proportional relationship?

Back

To find the unit rate, divide the first quantity by the second quantity. For example, if you have 120 miles in 2 hours, the unit rate is 120 miles ÷ 2 hours = 60 miles per hour.

Tags

CCSS.7.RP.A.2B

Front

What is the scale of a model?

Back

The scale of a model is the ratio of the model's size to the actual size. For example, a scale of 1/2 cm = 4 inches means that every 1/2 cm on the model represents 4 inches in real life.

Tags

CCSS.7.G.A.1

Front

How do you convert a scale measurement to real-life measurement?

Back

To convert a scale measurement to real-life measurement, use the scale ratio to find out how many real-life units correspond to the model units. For example, if 1 cm = 8 inches, then 5 cm on the model equals 5 cm × 8 inches/cm = 40 inches.

Tags

CCSS.7.G.A.1

Front

What is simple interest?

Back

Simple interest is the amount of money earned or paid on a principal amount over a period of time at a fixed interest rate. It can be calculated using the formula: Interest = Principal × Rate × Time.

Tags

CCSS.7.RP.A.3

Front

How do you calculate simple interest?

Back

To calculate simple interest, use the formula: Interest = Principal × Rate × Time. For example, if you deposit $100 at a 5% interest rate for 2 years, the interest is $100 × 0.05 × 2 = $10.

Tags

CCSS.7.RP.A.3

Front

What is the formula for calculating unit rate in dollars per hour?

Back

The formula for calculating unit rate in dollars per hour is: Unit Rate = Total Earnings ÷ Total Hours Worked.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Elijah earns $200 for 8 hours of work, what is his unit rate?

Back

Elijah's unit rate is $200 ÷ 8 hours = $25 per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the interest earned on a deposit of $225 at a rate of 1.5% over 2 years?

Back

The interest earned is calculated as: Interest = $225 × 0.015 × 2 = $6.75.

Tags

CCSS.7.RP.A.3

Front

How do you find the total interest paid on a loan?

Back

To find the total interest paid on a loan, use the formula: Interest = Principal × Rate × Time. For example, for a loan of $750 at 18% over 2 years, the interest is $750 × 0.18 × 2 = $270.

Tags

CCSS.7.RP.A.3