Add, Subtract, Multiply, and Divide 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.

Front

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

Back

The result depends on the absolute values; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.

Front

What is the rule for multiplying two rational numbers with the same sign?

Back

When multiplying two rational numbers with the same sign, the product is positive.

Front

What is the rule for multiplying two rational numbers with different signs?

Back

When multiplying two rational numbers with different signs, the product is negative.

Front

How do you subtract a rational number from another rational number?

Back

To subtract a rational number, you add its opposite. For example, a - b is the same as a + (-b).

Front

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

Back

-36

Front

What is the result of -23.4 - 3.4?

Back

-26.8

Front

What is the result of 4.08 x -9.6?

Back

-39.168

Front

What is the result of -41 - 15 + (-29)?

Back

-85