Here are the answers:
0.00007 |
7 X 0.00001 |
7 X 10-5 |
0.027 |
27 X 0.001 |
27 X 10-3 |
0.0000000000003 |
3 X 0.0000000000001 |
3 X 10-13 |
There are many different ways to write a number in scientific notation. All of the following are correct ways to write 570,000:
570 X 1,000 = 570 X 103
57 X 10,000 = 57 X 104
5.7 X 100,000 = 5.7 X 105
The last version is called the standard form, and is the easiest form to use for computations. This is how the standard form look in general:
(single digit).(rest of digits) X 10(exponent)
Therefore the coefficient in the standard form is a number between 1 and 10. You should try to place a number in the standard form for most computations.
How did we get 570,000 into the standard form? Here's one way:
570,000 = 570 X 1000 = 570 X 103= 570 X 10 X 10 X 10
570 = 57 X 10 = 5.70 X 10 X 10
So 570,000 = 5.7 X 10 X 10 X 10 X 10 X 10 = 5.7 X 105
Which of the numbers below is the expression in the standard form for the number 3,930,000?
Questions? Ask the designer, Jim Heath
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