Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating the whole number 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

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 0.5 in fraction form?

Back

0.5 is equivalent to 1/2.

Front

What is the sum of 2.5 and 3.7?

Back

The sum of 2.5 and 3.7 is 6.2.

Front

What is the difference between 7.8 and 2.4?

Back

The difference between 7.8 and 2.4 is 5.4.

Front

How do you round 3.67 to the nearest whole number?

Back

3.67 rounded to the nearest whole number is 4.

Front

What is the total cost if you buy items costing $4.50 and $3.25?

Back

The total cost is $7.75.

Front

What is 1.2 + 0.75?

Back

1.2 + 0.75 = 1.95.

Front

What is 5.5 - 2.2?

Back

5.5 - 2.2 = 3.3.