SOLUTION: Write 1.23 x 10^–4 in standard notation.

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Question 89094: Write 1.23 x 10^–4 in standard notation.
Found 2 solutions by josmiceli, Edwin McCravy:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Write 1.23 x 10^–4 in standard notation.
10^-1 = .1
10^-2 = .01
10^-3 = .001
10^-4 = .0001
etc.
1.23%2A10%5E-4+=+123%2A10%5E-2%2A10%5E-4
123%2A10%5E-6
Start at the right and count off 6 decimal places
.000123 answer

Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
 Write 1.23 x 10–4 in standard notation

Rule:

1.  If the exponent of 10 is positive, move the decimal to the RIGHT
    that number of places and remove the ×10exponent

2.  If the exponent of 10 is negative, move the decimal to the LEFT
    the absolute value of that number of places and remove the
    ×10exponent

In 1.23 x 10–4, the exponent is negative, so we take the 
absolute value of -4, which is 4, and move the decimal of 1.23 four 
places to the left. To do that we need to put three 0's in front, 
so the answer is

    .000123

Edwin