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 answer 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 answer directly below the other decimal points.

Front

What is the value of 0.08 in relation to 1?

Back

0.08 is 8 hundredths, which means it is less than 1.

Front

What is the result of 123.6 - 0.08?

Back

The result is 123.52.

Front

What is the result of 7.9 - 3.47?

Back

The result is 4.43.

Front

What is the result of 2.496 - 1.672?

Back

The result is 0.824.

Front

If an adult's ticket costs $5.75 and the total cost is $9.50, how much is the child's ticket?

Back

The child's ticket costs $3.75.

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 the nearest whole number or tenth.