Operations With Rational Numbers Review

Front

What is a rational number?

Back

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

Front

How do you add a positive and a negative integer?

Back

To add a positive and a negative integer, subtract the smaller absolute value from the larger absolute value and keep the sign of the integer with the larger absolute value.

Front

What is the result of adding two negative integers?

Back

The result of adding two negative integers is always a negative integer.

Front

How do you subtract a negative integer from a positive integer?

Back

Subtracting a negative integer is the same as adding its absolute value.

Front

What is the sum of 9 and -22?

Back

9 + (-22) = -13.

Front

If a stock drops $372.33 over 7 days, how do you find the daily loss?

Back

Divide the total loss by the number of days: -372.33 / 7 = -53.19.

Front

What is the new position of a submarine that ascends 125 feet from 400 feet below sea level?

Back

The new position is -400 + 125 = -275 feet.

Front

How do you represent losing points on a test mathematically?

Back

Losing points can be represented as negative integers, e.g., -5 for losing 5 points.

Front

What is the total amount owed if Ms. Snyder owes $4.50 and pays $2.75?

Back

$4.50 - $2.75 = $1.75.

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.