Add and Subtract 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, 2.5 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 0.1 in cents?

Back

0.1 in cents is 10 cents.

Front

What is the value of 0.25 in dollars?

Back

0.25 in dollars is 25 cents.

Front

If Jenna buys a toy for $5.50 and pays with a $10 bill, how much change does she get back?

Back

She gets back $4.50.

Front

What is 1.5 + 2.3?

Back

1.5 + 2.3 = 3.8.

Front

What is 5.75 - 2.5?

Back

5.75 - 2.5 = 3.25.

Front

What is the sum of 3.3 and 4.7?

Back

The sum of 3.3 and 4.7 is 8.0.

Front

What is the difference between 10.0 and 3.5?

Back

The difference between 10.0 and 3.5 is 6.5.