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Answer/Discussion to 1a

 

*When div. like bases you sub. your exp.        *Raise each base to -2 *Mult. your exponents     *Rewrite with a pos. exp. by taking recip. of base

 

(return to problem 1a)

 

 

Answer/Discussion to 1b

 

*Raise each base to 5 *Mult. your exponents   *Rewrite with a pos. exp. by taking recip. of base

 

(return to problem 1b)

 

 

Answer/Discussion to 2a  .00000146

 

Step 1:  Move the decimal point so that you have a number that is between 1 and 10.

 

*Decimal is at the beginning of the number *Move decimal to create a number between 1 and 10

 

Step 2:   Count the number of decimal places moved in Step 1 .

 

How many decimal places did we end up moving? We started at the beginning of the number .00000146 and moved it between the 1 and 4.  That looks like a move of 6 places. What direction did it move? Looks like we moved it to the right. So, our count is -6.

 

Step 3:   Write as a product of the number (found in Step 1) and 10 raised to the power of the count (found in Step 2).

 
 

(return to problem 2a)

 

 

Answer/Discussion to 3a

 

= 71000000000

*Move the decimal 10 to the right

 

(return to problem 3a)

 

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Last revised on August 2, 2011 by Kim Seward.
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