Operations with 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 rational numbers with different denominators?

Back

To add two rational numbers with different denominators, find a common denominator, convert each fraction, and then add the numerators.

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 being added.

Front

What is the product of two negative rational numbers?

Back

The product of two negative rational numbers is a positive rational number.

Front

What is the quotient of two rational numbers?

Back

The quotient of two rational numbers is found by multiplying the first number by the reciprocal of the second number.

Front

If you multiply a positive rational number by a negative rational number, what is the sign of the result?

Back

The result will be negative.

Front

What is the total growth of a plant that grows 1/4 cm every day for 21 days?

Back

5 1/4 cm.

Front

What is the result of 3/4 ÷ 3/8?

Back

2.

Front

When adding two rational numbers, what should you always check?

Back

You should check if they have the same denominator before adding.

Front

What happens when you divide a negative rational number by a positive rational number?

Back

The result will be negative.