Multiply & 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 multiply two rational numbers?

Back

To multiply two rational numbers, multiply their numerators together and their denominators together. For example, (a/b) * (c/d) = (a*c)/(b*d).

Front

What is the product of 6.3 and 0.6?

Back

3.78

Front

How do you divide two rational numbers?

Back

To divide two rational numbers, multiply the first number by the reciprocal of the second number. For example, (a/b) ÷ (c/d) = (a/b) * (d/c).

Front

If a plant grows 0.25 cm every day for 21 days, what is the total amount of growth?

Back

5.25 cm

Front

What is the reciprocal of a number?

Back

The reciprocal of a number is 1 divided by that number. For example, the reciprocal of 4 is 1/4.

Front

What happens when you multiply a rational number by zero?

Back

When you multiply any rational number by zero, the product is always zero.

Front

What is the result of dividing a number by itself?

Back

Dividing any non-zero number by itself results in 1.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the significance of the denominator in a fraction?

Back

The denominator indicates how many equal parts the whole is divided into.