Mathematics Unit 3 Review

Front

What is the definition of a negative number?

Back

A negative number is a number that is less than zero, represented with a minus sign (-).

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction, and is always positive.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio of two integers, where the denominator is not zero.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

What is the opposite of a number?

Back

The opposite of a number is the number that is the same distance from zero on the number line but in the opposite direction.

Front

How do you identify a positive number?

Back

A positive number is any number greater than zero, represented without a sign or with a plus sign (+).

Front

What does it mean for a number to be 10 units away from zero?

Back

It means the absolute value of the number is 10, which can be either +10 or -10.

Front

What is the significance of the number 0 in mathematics?

Back

Zero is considered an integer and a rational number; it represents the absence of quantity and is the neutral element in addition.

Front

How can you represent the integer -15 in a real-world context?

Back

-15 can represent a loss, such as losing 15 yards in a football game.

Front

What is the relationship between integers and rational numbers?

Back

All integers are rational numbers because they can be expressed as a fraction with a denominator of 1.