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, 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 with whole numbers, placing the decimal point in the answer 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 with whole numbers, placing the decimal point in the answer directly below the other decimal points.

Front

What is the sum of 945.4 and 34.73?

Back

The sum of 945.4 and 34.73 is 980.13.

Front

What is the difference between 343.49 and 12.92?

Back

The difference between 343.49 and 12.92 is 330.57.

Front

If Kim has $500.00 and spends $58.99, how much does she have left?

Back

Kim has $441.01 left in her savings account.

Front

What is the sum of 252.23 and 985.32?

Back

The sum of 252.23 and 985.32 is 1237.55.

Front

If Samantha has 2.78 liters and 0.98 liters of juice, how much juice does she have altogether?

Back

Samantha has 3.76 liters of juice altogether.

Front

What is the place value of the digit 4 in the number 945.4?

Back

The place value of the digit 4 in the number 945.4 is tenths.

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.