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Decimal Arithmetic

Multiplication

Two decimal numbers may be multiplied as follows:

  • the numbers are written one below the other with the rightmost digit aligned
  • starting on the right, multiply each digit in the top number by each digit in the bottom number, just as with whole numbers (ignore the decimal points)
  • add the products
  • place the decimal point in the answer by starting at the right and moving a number of places equal to the sum of the decimal places in both numbers multiplied

 

Example 3A.

Let us calculate:   23.45*2.3

answer is 53.935


Example 3B.

Each time you click "New Example" a new example will be shown. Click "=" to see the answer.


       
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Exercise 3.

Perform the following multiplication without using a calculator:


  × =










<< Subtraction | Decimals Index | Division >>

 

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