Multiply and Divide Rational Numbers

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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.

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How do you convert a decimal to a fraction?

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To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for each digit after the decimal point.

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What is the fraction equivalent for the decimal 0.012?

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What is the fraction equivalent for the decimal 5.4?

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What is the product of two negative rational numbers?

Back

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

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What is the product of a positive and a negative rational number?

Back

The product of a positive and a negative rational number is a negative rational number.

Front

How do you estimate the product of two decimal numbers?

Back

To estimate the product, round each number to the nearest whole number and then multiply the rounded numbers.

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How do you multiply fractions?

Back

To multiply fractions, multiply the numerators together and the denominators together.