Question

ehat power of 10 we get on deviding 10 raised to 9 by 10 raised to 4
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Answer 1

Explanation:

Here are some examples:

1 = 1 x 100

10 = 1 x 101

1000 = 1 x 103

1,000,000 = 1 x 106

1,000,000,000,000 = 1 x 1012

We express numbers less than 1 similarly:

1/10 = 0.1 = 10-1

1/100 = 0.01 = 10-2

1/100,000 = 0.00001 = 10-5

where the last example is pronounced "ten to the minus five."

Suppose you want to express a number like 2,345,000,000 in scientific notation. To do this, you move the decimal point to the left, counting as you go, until it is just to the right of the left-most number (the 2, so you should have counted to 9). You now rewrite the number with the decimal point at its new place and drop any zeroes. The left-shift of the decimal point is the equivalent of dividing a number by 10, so to get back to the original number, we must now multiply by 10x where x is the number of left-shifts you counted (in this case, 9). In scientific notation, the above number comes out as 2.345 x 109.