7th grade STAAR review

Front

What is simple interest?

Back

Simple interest is the interest calculated only on the principal amount of a loan or investment, not on the interest that accumulates over time.

Front

How do you calculate simple interest?

Back

Simple interest can be calculated using the formula: Interest = Principal × Rate × Time.

Front

What is the formula for calculating the percentage decrease in price?

Back

Percentage decrease = ((Original Price - New Price) / Original Price) × 100.

Front

If the ratio of boys to girls is 3:4 and there are 48 girls, how do you find the number of boys?

Back

Use the ratio to set up a proportion: (Boys/Girls) = (3/4). If Girls = 48, then Boys = (3/4) × 48 = 36.

Front

What does it mean if an inequality is represented on a number line?

Back

It shows the set of all possible solutions to the inequality, indicating which values satisfy the condition.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

What is the principal in a loan?

Back

The principal is the original sum of money borrowed or invested, excluding any interest or additional fees.

Front

What is the meaning of 'rate' in the context of interest?

Back

The rate is the percentage at which interest is charged or earned on the principal amount.

Front

How do you find the total amount to be paid back on a loan after one year?

Back

Total Amount = Principal + Interest.

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.