Unit 4 Part 2 Add and Subtract 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 the same sign?

Back

When adding two rational numbers with the same sign, you add their absolute values and keep the sign.

Front

What is the result of 0.6 + 0.15?

Back

0.75

Front

What is the result of -4.68 + -1.24?

Back

-5.92

Front

How do you subtract rational numbers?

Back

To subtract rational numbers, you can add the opposite of the number being subtracted.

Front

What is the first step in solving a word problem involving addition of rational numbers?

Back

Identify the quantities involved and determine what is being asked.

Front

If Rebecca needs 10 1/2 yards of fabric and has 2 1/2 yards and 4 1/4 yards, how much more does she need?

Back

3 3/4 yards.

Front

What is the process to find the total cost of items purchased?

Back

Add the prices of all items together.

Front

What is the result of adding two negative rational numbers?

Back

The result is a negative rational number.

Front

What does it mean to keep the sign when adding rational numbers?

Back

It means to retain the sign of the sum based on the signs of the numbers being added.