- Multiply a decimal by a one-digit whole number
To multiply a decimal by a one-digit whole number, count the decimal places in the factors, multiply, and move the decimal point one place to the left for each decimal place you counted.
Multiply 8.3 x 9 =
Multiply as you would multiply whole numbers.

Count the number of decimal places in the factors. There are 1 decimal places in 8.3. Move the decimal point 1 places to the left in the answer.
747. → 74.7
Write the answer:
