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 4.62 + 7.7?

Back

The value is 12.32.

Front

What is the difference between 39.3 and 17.6?

Back

The difference is 21.7.

Front

If each item costs $2.50, what is the total cost of 3 items?

Back

The total cost is $7.50.

Front

If Jerry bought 6.95 lbs of jelly beans and 1.75 lbs were cherry flavor, how many pounds were lime flavor?

Back

5.2 lbs were lime flavor.

Front

What is the sum of 4.18 and 3.11?

Back

The sum is 7.29.

Front

What is the first step in adding decimals?

Back

The first step is to align the numbers by the decimal point.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to make it simpler while keeping it close to the original value.