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Lesson 7­3.notebook

Assignment:
1­­>L7.3, pg. 419­420, #3­51 (3rds) ­ Due Tomorrow (1/15)
2­­>Checkpoint 7.1­7.2 ­ Due Thursday [1/16]

January 14, 2014
Lesson 7­3.notebook

January 14, 2014

Lesson 7.3 WarmUp:
Simplify each expression. 
1) (­xy)3(xz)

2)

­3(2x)4(4x5y)2

3)

(­3a3b4)(­3a3b)4

4)

(a2b3)2
 (ab)­2

[

2x3y2z
3x4yz­2

[

5)

­2
Lesson 7­3.notebook

Lesson 7.3:
*scientific notation ­ a number written in the form:  a  x  10n, 
where 1 <  a  <  10

**To multiply numbers in scientific notation...
­­multiply the coefficients ­ add the exponents

**To divide numbers in scientific notation...
­­divide the coefficients ­ subtract the exponents

****And always make sure that your answer is written in scientific 
notation!

January 14, 2014
Lesson 7­3.notebook

January 14, 2014

Lesson 7.3 examples:
Express each number in scientific notation.
A) 185,000,000

B)

0.0000564

Express each number in standard form.
C) 1.98  x  107

D)

6.83  x  10­5
Lesson 7­3.notebook

January 14, 2014

Evaluate each product.
E) (1.2  x  103)(1.45  x  1012)

F)

(2.9  x  10­2)(5.2  x  10­9)

Evaluate each quotient.
G) 2.542  x  105
 4.1  x  10­10

H)

1.445  x  10­7
  1.7  x  105

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