Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. 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 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 0.48 + 0.18?

Back

0.66

Front

What is the value of 0.63 - 0.17?

Back

0.46

Front

What is the sum of 25.47 and 5.78?

Back

31.25

Front

What is 3.12 + 2.4?

Back

5.52

Front

If Ellis weighs 85.73 pounds and Stephen weighs 73.42 pounds, what is their total weight?

Back

159.15 pounds

Front

What is the first step in adding decimals?

Back

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

Front

What do you do if the decimals have different lengths?

Back

You can add zeros to the end of the shorter decimal to make them the same length.