Up next in Basic Math Skills (15 videos)
Do you and arithmetic add up to disaster? Sharpen your basic bath skills with the lessons in this Howcast video series.
You Will Need
- Decimal numbers
- Whole numbers
- Decimal places
Multiply whole numbers
Multiply the 2 numbers containing decimals the same way you would if they were whole numbers containing no decimals.
Count decimal places
Count how many digits follow the decimal points in the two decimal numbers you are multiplying.
Correctly position the decimal point
Position the decimal point in the answer, also known as the product. The product will have as many decimal places as the sum of the decimal places in the two original numbers, also called the multiples. First, add up the number of decimal places in the two multiples.
Shift decimal point
Starting at the right of the product, shift the decimal point to the left the same number of places as the sum of the decimal places in your product.
Eliminate any zeros at the end of the product -- 0.5 times 2.2 equals 1.1.