Adding and Subtracting Decimals Check- Point

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.

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

What is the sum of 3.74 and 9.8?

Back

The sum is 13.54.

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 difference between 123.6 and 0.08?

Back

The difference is 123.52.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest whole number or specified decimal place.

Front

What is the nearest whole number to 3.87?

Back

The nearest whole number is 4.

Front

How do you estimate the sum of two decimal numbers?

Back

To estimate the sum, round each number to the nearest whole number and then add those rounded numbers.

Front

What is the estimated sum of $5.95 and $8.30 to the nearest whole dollar?

Back

The estimated sum is $6.00 + $8.00 = $14.00.

Front

What is the value of 8.99?

Back

8.99 is a decimal number that represents eight whole units and ninety-nine hundredths.