Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part.

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 0.1 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

What is the result of 1.5 + 2.3?

Back

1.5 + 2.3 = 3.8.

Front

What is the result of 5.6 - 2.4?

Back

5.6 - 2.4 = 3.2.

Front

If you have $10.00 and spend $3.75, how much do you have left?

Back

You have $6.25 left.

Front

What is the result of 7.9 - 3.47?

Back

7.9 - 3.47 = 4.43.

Front

What is the result of 55.78 + 4.6?

Back

55.78 + 4.6 = 60.38.