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 total of 42.07 miles, 29.3 miles, and 34.8 miles?

Back

106.17 miles.

Front

What is the combined length of 23.06 inches and 9.3 inches?

Back

32.36 inches.

Front

If you have $89.26 and spend $32.79, how much do you have left?

Back

$56.47.

Front

What is the difference between 132.95 meters and 207.6 meters?

Back

74.65 meters.

Front

If you buy 18.32 pounds of beef and use 13.88 pounds, how much is left?

Back

4.44 pounds.

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 the nearest whole number or to a specified decimal place.

Front

What is the place value of the digit 7 in the number 3.47?

Back

The place value of 7 in 3.47 is in the hundredths place.