Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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 2.5 + 3.75?

Back

The value is 6.25.

Front

What is the value of 10.0 - 2.5?

Back

The value is 7.5.

Front

If Jenna has $10 and spends $2.74, how much does she have left?

Back

She has $7.26 left.

Front

What is the result of 5.49 + 0.5?

Back

The result is 5.99.

Front

What is the result of 91.55 + 7.6?

Back

The result is 99.15.

Front

If Morgan jogged 51.2 kilometers and Karen jogged 53.52 kilometers, how much more did Karen jog?

Back

Karen jogged 2.32 kilometers more than Morgan.

Front

What is the difference between 8.5 and 3.2?

Back

The difference is 5.3.