Add and Subtract 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, 3.14 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 1.75 + 5.2?

Back

The value is 6.95.

Front

What is 15.07 - 12.2?

Back

The answer is 2.87.

Front

If Jenna buys a candy for $2.74 and pays with a $10 bill, how much change does she get?

Back

She gets $7.26 in change.

Front

How do you find the difference between two decimal numbers?

Back

To find the difference, subtract the smaller number from the larger number after aligning the decimal points.

Front

What is the result of 6.7 - 2.33?

Back

The result is 4.37.

Front

If students collected 172.3 pounds of food in week one and 238 pounds in week five, how much more did they collect in week five?

Back

They collected 65.7 pounds more in week five.

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.