Adding and Subtracting Decimals

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What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

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How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

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How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

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Back

Front

If Jerry bought 6.95 lbs of jelly beans and 1.75 lbs were cherry flavor, how many pounds were lime flavor?

Back

Front

What is the total height Paige grew if she grew 4.62 cm in the first year and 7.7 cm in the second year?

Back

Front

What is the difference between Tamara's jump of 17.6 feet and the world record of 39.3 feet?

Back

Front

If each item costs $2.50, how much do three items cost?

Back

Front

What is the first step in adding decimals?

Back

Align the numbers by the decimal point.

Front

What should you do if there are different numbers of decimal places when adding or subtracting?

Back

Add zeros to the end of the shorter number to make the decimal places equal.