Adding & Subtracting 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 representation of 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 46.4 - 41.745?

Back

4.655

Front

What is the value of 7.05 - 4.6?

Back

2.45

Front

What is the value of 55.78 + 4.6?

Back

60.38

Front

If Kaylin purchases dog food for $7.42 and a dog toy for $3.54, what is the total cost?

Back

$10.96

Front

If Hallie buys a turtle for $2.89, a turtle cage for $0.99, and turtle food for $0.56, what is the total cost?

Back

$4.44

Front

What is the first step in adding decimals?

Back

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

Front

What is the first step in subtracting decimals?

Back

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