Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten. It is used to represent numbers that are not whole, such as 0.5 or 2.75.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers. Place 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. Place the decimal point in the difference directly below the other decimal points.

Front

What is the sum of 32.15 and 24.15?

Back

56.30

Front

What is the difference between 123.6 and 0.08?

Back

123.52

Front

If you have $20 and spend $2.15 and $6.58, how much do you have left?

Back

$11.27

Front

What is the total size of two files if one is 50.30 GB and the total is 93 GB?

Back

42.7 GB

Front

What is the sum of 87.03 and 90.9?

Back

177.93

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to make it simpler while keeping it close to the original value, often to a specific place value.

Front

What is the place value of the digit 5 in 3.45?

Back

The place value of 5 in 3.45 is 'hundredths'.