Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating the whole number 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 sum of 0.5 and 0.3?

Back

The sum of 0.5 and 0.3 is 0.8.

Front

What is the difference between 1.5 and 0.7?

Back

The difference between 1.5 and 0.7 is 0.8.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is 3.75 + 2.25?

Back

3.75 + 2.25 = 6.00.

Front

What is 5.5 - 2.2?

Back

5.5 - 2.2 = 3.3.