Adding and Subtracting Decimals

Front

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.

Front

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.

Front

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.

Front

What is the value of 0.5 in fraction form?

Back

0.5 is equivalent to 1/2.

Front

What is the sum of 3.49 and 4.60?

Back

The sum is 8.09.

Front

If a race is 22.01 kilometers and one runner runs 9.41 kilometers, how far does the other runner run?

Back

The other runner runs 12.60 kilometers.

Front

What is 55.78 + 4.6?

Back

The answer is 60.38.

Front

Annie buys shoes for $47.82 and a top for $13.36. If she pays with $100, how much change does she get?

Back

Annie receives $38.82 in change.

Front

What is the result of 21 + 4.09?

Back

The result is 25.09.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is simpler, often to a certain number of decimal places.