Applying Rational Number Operations

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 two negative numbers?

Back

When adding two negative numbers, you add their absolute values and keep the negative sign. For example, -3 + (-7) = -10.

Front

What is the result of subtracting a negative number from a negative number?

Back

Subtracting a negative number is the same as adding its absolute value. For example, -12 - (-4) = -12 + 4 = -8.

Front

How do you multiply a negative number by a positive number?

Back

The product of a negative number and a positive number is negative. For example, -4 * 3 = -12.

Front

What is the formula to calculate the total cost of multiple items?

Back

Total Cost = (Number of items) x (Cost per item).

Front

If you have $78 and spend $12, how much is left?

Back

$78 - $12 = $66.

Front

What number must be added to -66 to make zero?

Back

To make zero, you need to add 66 to -66.

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place that over the original denominator. For example, 2 3/4 = (2*4 + 3)/4 = 11/4.

Front

What is the area covered by multiple bags of mulch?

Back

Area = (Number of bags) x (Area covered by each bag). For example, 2 3/4 bags covering 74.3 sq ft each covers 204.325 sq ft.

Front

What is the process for evaluating expressions with negative numbers?

Back

Follow the order of operations (PEMDAS) and apply the rules for adding and subtracting negative numbers.