Adding Rational Numbers

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 rational numbers?

Back

To add two negative rational numbers, you add their absolute values and keep the negative sign. For example, -2 + (-3) = -(2 + 3) = -5.

Front

What is the sum of -5 and -7?

Back

-5 + (-7) = -12.

Front

How do you add a positive and a negative rational number?

Back

To add a positive and a negative rational number, 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 sum of 8 and -3?

Back

8 + (-3) = 5.

Front

What is the sum of -10 and 4?

Back

-10 + 4 = -6.

Front

How do you represent a temperature drop in rational numbers?

Back

A temperature drop is represented by a negative number. For example, a drop of 5 degrees is represented as -5.

Front

If the temperature is 3 degrees and it drops 12 degrees, what is the new temperature?

Back

3 + (-12) = -9 degrees.

Front

What is the result of adding two negative decimals, -2.5 and -3.5?

Back

-2.5 + (-3.5) = -6.0.

Front

How do you find the distance between two points on a number line?

Back

To find the distance, subtract the smaller number from the larger number and take the absolute value.