Unit #5: Adding and subtracting decimals

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What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating the whole number from the fractional part.

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How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add each column starting from the right, carrying over if necessary.

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How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract each column starting from the right, borrowing if necessary.

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Front

How do you convert a fraction to a decimal?

Back

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

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