Digital SAT Math

Front

What is the average of two expressions?

Back

The average of two expressions, such as a and b, is calculated as (a + b) / 2.

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is calculated as length × width.

Front

How do you find the measure of an unknown angle in a triangle?

Back

In a triangle, the sum of the angles is always 180 degrees. To find an unknown angle, subtract the sum of the known angles from 180 degrees.

Front

What is the relationship between dollars and cents?

Back

1 dollar is equal to 100 cents.

Front

How do you calculate the area of a circle?

Back

The area of a circle is calculated using the formula A = πr², where r is the radius.

Front

What is the formula for the average of multiple terms?

Back

The average of n terms is calculated as (sum of all terms) / n.

Front

How do you solve for a variable in a linear equation?

Back

To solve for a variable, isolate it on one side of the equation using inverse operations.

Front

What is the formula for the area of a sector of a circle?

Back

The area of a sector is given by A = (θ/360) × πr², where θ is the angle in degrees and r is the radius.

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter of a rectangle is calculated as P = 2(length + width).

Front

How do you convert from dollars to cents?

Back

To convert dollars to cents, multiply the amount in dollars by 100.