Adding and Subtracting Rational Numbers Review

Front

Write -7/8 as a decimal.

Back

-0.875

Front

Calculate: –8.24 – 6.59

Back

-14.83

Front

In Alaska, the temperature in the morning was –10°F. By the evening, it had decreased by 21.4°F. What was the temperature by the evening?

Back

-31.4 degrees

Front

What is the additive inverse of -0.78?

Back

0.78

Front

What is the additive inverse of 2/3?

Back

-2/3

Front

Define rational numbers.

Back

Rational numbers are numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is the sum of -3/4 and 1/2?

Back

-1/4

Front

How do you subtract a negative number from a positive number?

Back

Subtracting a negative number is the same as adding its positive counterpart.

Front

What is the result of adding two negative rational numbers?

Back

The result is always a negative rational number.

Front

What is the result of adding a positive rational number and a negative rational number?

Back

The result can be positive, negative, or zero, depending on the absolute values of the numbers.