February 25: Operations with Scientific Notation

Today was a short day because of Career Day, so we quickly went over how to multiply and divide numbers in Scientific Notation.

1.  Rule for Multiplying:

(c × 10^a) × (d × 10^b)  = (c × d) × 10^a+b

Multiply the factors and the ADD THE EXPONENTS 

2.  Rule for Dividing:

(c × 10^a) ÷ (d × 10^b) = (c ÷ d) × 10^a-b

Divide the factors and then SUBTRACT THE EXPONENTS

Remember we have our Unit 6 test THIS FRIDAY!


Click here for today's homework

February 11: Product of Powers

Product of Powers, or multiplying terms with exponents, was the focus for today.  The best strategy for this new concept is to start by writing each term out in expanded form. Then determine the number of factors and simplify!  Sounds easy, right?  Wait... it gets even easier!

Once we did a few examples together, many of us noticed a pattern- all we have to do is add the exponents!  See?  Told you it was even easier!

Product of Powers Rule:    

Add the exponents and the base stays the same

ex: x ^{m .} x ⁿ =  x ^m+n

Click here for today's homework.