february 25, 2015

Today: Khan Academy Practice Problems

Multiplying Monomials : More Complex Problems Scientific Notation Review

Multiplying & Dividing w/Scientific Notation Class Work 3.6

Khan Academy: Simplifying Expressions with ExponentsIn other words, all answers

are in integer, not ratio form.

z9 t12

In Khan Academy, type z9

like this : z^9shift 6

Common Errors with Exponents

But remember, in the case of:

5x3 • 6x2,

the ‘x’ is the base. What is our answer here?

30x5

Common Errors with Exponents

Multiplying Monomials: Level II1. (-2r3s7t4 )2 (-6r2t 6)

Raise the 1st monomial to the 2nd power.(4r6s14t8) (-6r2t 6):

= -24r 8 s14 t14

Multiply the coefficients and add the variables with like bases

Step 1:

Multiplying Monomials: Level II

Step 2:

Step 3:

Step 4:

Step 5:

Step 6-7:

Multiplying Monomials: Level II

Change to a division problem & solve:

Monomials: New Problem Type

2x2y1

3x-3y-2 =

Change to a division problem & solve:6r3s2

- 1

2r-2s-7

=

Change to a multiplication problem & solve:

(4x3y2z-2) (18

x-2z-4) =

Scientific Notation

Scientific Notation ReviewWrite in Scientific Notation:1. 32,5002. 902,050,0003. .0005002

Write in Standard Notation:1. 57 x 10-4

2. 9.087 x 105

3. 20.9 106

Scientific Notation: New Problem TypesMultiply Monomials Written in Scientific Notation

A. (3.2 x 103) (7.4 x 102) 1. Use the commutative Property of multiplication to rewrite

problem with the constants together and the exponents together.(3.2 x 7.4) (103 x 102) = 23.68 x 105 =

2. Rewrite in correct scientific notation form.23.68 x 105 = 2.368 x 10?6

Scientific Notation: New Problem TypesDivide Monomials Written in Scientific Notation

= 4.5 x 106

= .75 x 10-7 = = 7.5 x 10?-8

1. Divide the coefficients and subtract the exponents. 2. Rewrite in correct scientific notation form.

Always use the decimal form of the number

Class Work 3.7 You must show all steps required to

solve the problem