Wednesday, Sept. 8 - Multiplying Decimals

Objective: By the end of this lesson, you will be able to multiply decimals.

Just follow these steps:

• Multiply normally, ignoring the decimal points.
• Then put the decimal point in the answer - it will have as many decimal places as the two original numbers combined.

In other words, just count up how many numbers are after the decimal point in both numbers you are multiplying, then the answer should have that many numbers after its decimal point.

  2.4
x  .5
_____

Step 1: Multiply 24 and 5, which equals  120

Step 2: Count up the decimal places in the problem (2)

Step 3: Place the decimals in the number, counting from left to right (so ... 0 is one space, 2 is the second space ...) 1.20 or 1.2