Sarah converts the number 1,500,600 into scientific notation. She writes 1.5006 x 104. Which of the following statements is true?

Sarah is correct.
Sarah is not correct because the exponent should be 6.
Sarah is not correct because 1.5006 should be 1.5.
Sarah is not correct because the exponent should be -4.

Question

Sarah converts the number 1,500,600 into scientific notation. She writes 1.5006 x 104. Which of the following statements is true?

Sarah is correct.
Sarah is not correct because the exponent should be 6.
Sarah is not correct because 1.5006 should be 1.5.
Sarah is not correct because the exponent should be -4.

tkhunny · Answer

1) Simply writing "104" when you mean $10^{4}$ will not do at all.  Very confusing.

Let's see...
15600600 * 10^0
1560060.0 * 10^1
156006.00 * 10^2
15600.600 * 10^3
1560.0600 * 10^4
156.00600 * 10^5

How is this going?  It's not quite done.  What do you think if $1.5*10^{4}$ already?