2021 STAAR Released Test 7th Grade

Front

What is the formula to calculate the percentage of a budget spent on a specific category?

Back

Percentage = (Part / Whole) x 100

Front

If a family has an income of $3,200 and spends $480 on medical expenses, what percent of their budget is spent on medical expenses?

Back

15% (calculated as (480 / 3200) x 100)

Front

What is simple interest?

Back

Simple interest is calculated using the formula: Interest = Principal x Rate x Time.

Front

If you deposit $5,000 in a bank offering 2.5% simple interest, how much interest will you earn in 3 years?

Back

$375 (calculated as 5000 x 0.025 x 3)

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per 1 unit.

Front

If Will spent $3.75 for 3 pounds of granola, how do you calculate the unit rate in dollars per pound?

Back

Unit rate = Total cost / Total pounds = 3.75 / 3 = $1.25 per pound.

Front

What does the term 'whole amount' refer to in percentage calculations?

Back

The whole amount is the total quantity or value from which a percentage is calculated.

Front

If a rate is given as a percentage, how do you convert it to a decimal for calculations?

Back

To convert a percentage to a decimal, divide by 100 (e.g., 15% = 0.15).

Front

What is the relationship between rate, whole amount, and part in percentage problems?

Back

Part = Rate x Whole Amount.

Front

How do you find the total amount after earning interest on a principal amount?

Back

Total Amount = Principal + Interest.