Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a number that has a whole part and a fractional part, separated by a decimal point. 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 sum of 1.2 and 2.3?

Back

The sum of 1.2 and 2.3 is 3.5.

Front

What is the difference between 5.5 and 2.2?

Back

The difference between 5.5 and 2.2 is 3.3.

Front

What is 0.75 + 0.25?

Back

0.75 + 0.25 = 1.00.

Front

What is 4.5 - 1.2?

Back

4.5 - 1.2 = 3.3.

Front

If you have $10.00 and spend $3.50, how much do you have left?

Back

You have $6.50 left.

Front

What is the value of 0.1 + 0.2 + 0.3?

Back

The value is 0.6.

Front

What is 7.8 - 3.4?

Back

7.8 - 3.4 = 4.4.