Monday, June 7, 2010

Multiplying 3 Digit Numbers

There have been several questions about multiplying 3 digit numbers by 1 digit numbers.

Let's try 326 x 8:

First, multiply 6 x 8. Write the product under the multiplication problem.
Start with the ones place.

6
x 8
48

Next go to the tens place. Multiply 20 x 8. Write that product under the first product.Be sure to line up the tens and ones.

16
x 8

48
160

Finally go to the hundreds place. Multiply 300 x 8.Write that product under the rest. Be sure to line up the hundreds, tens and ones.


300
x 8

2400

Add all the products together.

48
160
2400

2608

The product of 326 x 8 is 2608.

Sorry, I can't figure out how to do underline on this. Hope it's not too confusing... :o)

1 comment:

Unknown said...

That makes sense! Thank you for reviewing....