12/9 Bell Ringer (ADV)

Front

What is the new depth of a scuba diver who rises 25 feet from 53 feet below the ocean's surface?

Back

-28 feet (53 - 25 = 28 feet below the surface)

Front

If Jose earned 50 points, lost 40 points, earned 87 points, and lost 30 more points, what is his final score?

Back

67 points (50 - 40 + 87 - 30 = 67)

Front

Calculate 17.08 x 3.2.

Back

54.656

Front

What is the prime factorization of 420?

Back

2² • 3 • 5 • 7

Front

What is the definition of a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Front

What is the definition of a negative number?

Back

A negative number is a number that is less than zero.

Front

What is the process of adding a negative number to a positive number called?

Back

Subtraction.

Front

What is the definition of a factor in mathematics?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What is the definition of multiplication?

Back

Multiplication is the process of adding a number to itself a certain number of times.