Adding and Subtracting 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

What is the sum of -9 and -5?

Back

-14

Front

How do you find the change in temperature from 15 degrees to -12 degrees?

Back

Subtract the final temperature from the initial temperature: 15 - (-12) = 15 + 12 = 27 degrees change, but since it dropped, it's -27 degrees.

Front

What is the result of -28 + (-8)?

Back

-36

Front

What is the sum of -31 and -7?

Back

-38

Front

When adding rational numbers with the same sign, what do you do?

Back

Add together and keep the sign.

Front

What is the result of -4 + (-6)?

Back

-10

Front

What is the result of 5 + (-3)?

Back

2

Front

What is the result of -10 - 5?

Back

-15

Front

What is the result of 7 - (-2)?

Back

9