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 two rational numbers with different signs?

Back

When adding two rational numbers with different signs, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the result of adding -6 and 20?

Back

The result is 14.

Front

How do you find the difference in elevation between two points?

Back

To find the difference in elevation, subtract the lower elevation from the higher elevation.

Front

What is the formula for finding the average change in temperature?

Back

Average change in temperature = (Final temperature - Initial temperature) / Number of time intervals.

Front

What does it mean when a stock price drops?

Back

A drop in stock price means that the value of the stock has decreased, which can indicate a loss for investors.

Front

How do you calculate the daily loss if a stock drops a total amount over several days?

Back

Daily loss = Total loss / Number of days.

Front

What is the significance of negative temperatures?

Back

Negative temperatures indicate temperatures below zero degrees on the Celsius or Fahrenheit scale.

Front

How do you represent temperatures on a number line?

Back

Temperatures can be represented on a number line with positive values to the right of zero and negative values to the left.

Front

What is the temperature on Monday if it is 12 degrees less than -15 degrees?

Back

The temperature on Monday is -27 degrees.