Decimal Operations

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 result of adding 3.5 and 2.8?

Back

6.3

Front

How do you round a decimal to the nearest tenth?

Back

Look at the hundredths place. If it is 5 or more, round up. If it is less than 5, round down.

Front

Round 9.42 to the nearest tenth.

Back

9.4

Front

What is subtraction of decimals?

Back

Subtraction of decimals involves aligning the decimal points and subtracting as you would with whole numbers.

Front

What is the difference between 8.7 and 3.2?

Back

5.5

Front

How do you round a decimal to the nearest whole number?

Back

Look at the tenths place. If it is 5 or more, round up. If it is less than 5, round down.

Front

Round 3.78 to the nearest whole number.

Back

4

Front

What is multiplication of decimals?

Back

To multiply decimals, multiply as if they are whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.