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, 0.5 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

What is the sum of 0.6 + 0.7?

Back

1.3

Front

What is the sum of 456.1 + 345.98?

Back

802.08

Front

What is the sum of 1.70 + 4.65?

Back

6.35

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 difference of 9.43 - 3.34?

Back

6.09

Front

What is the difference of 9.73 - 2.52?

Back

7.21

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is simpler, often to a certain number of decimal places.

Front

What is the place value of 0.6?

Back

In 0.6, the 6 is in the tenths place.