Explore Rational Number Operations and Applications

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 convert a subtraction problem into an addition problem?

Back

To convert a subtraction problem into an addition problem, you can change the subtraction of a negative number into addition. For example, a - (-b) becomes a + b.

Front

What is the result of 82 - (-14)?

Back

82 + 14 = 96.

Front

What does a negative integer represent in a financial context?

Back

A negative integer represents a loss or an amount spent.

Front

If Mary buys 4 books at $15 each, what is the total cost?

Back

The total cost is 4 x 15 = $60.

Front

What is the difference between two negative numbers, such as -15 - (-55)?

Back

The difference is calculated as -15 + 55 = 40.

Front

How do you find the height of an object above ground level when given its depth below ground?

Back

To find the height above ground, add the depth below ground to the height of the object.

Front

If Doug digs a hole 1.7 feet deep and plants a bush 3.2 feet tall, how much is above ground?

Back

3.2 - 1.7 = 1.5 feet above ground.

Front

What is the total amount spent if Jason buys lunch for 9 days at $2.35 each?

Back

Total spent = 9 x 2.35 = $21.15.

Front

What does the term 'absolute value' mean?

Back

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