Scientific Notation

7.2 × 10-4 written in regular notation is 0.00072

7.0*106

7.42 x 108

=======

7.5*10-8

1.06 x 10-7

1.3x10^8

1.496*108

Al

778412020 in scientific notation is: 7.78412 × 108

6.0*108

(1.75 x 10^5) ÷ (1 3/4 x 10^6) = (1.75 x 10^5) ÷ ((1 + 3 ÷ 4) x 10^6) = (1.75 x 10^5) ÷ (1.75 x 10^6) = (1.75 ÷ 1.75) x 10^(5-6) = 1 x 10^-1 = 10^-1 = 1/(10^1) = 1/10 = 0.1

It is: 2.09*109

63 = 6.3 x10^1

7.01 x 10^-4

It is: 1.54*10^-10 meter

3^3

I think it is Scientists that use scientific notation. It makes the calculation of numbers much easier, particularly if there are several numbers.

Consider 312 x 3012 x 2043004 x 17 =? becomes [and check my math]

3.12x102 x 3.012x103 x 2.043004x106 x 1.7x101 = ?

Now multiply the small (decimal) numbers, and add the powers to get the answer.

3.12 x 3.012 x 2.043004 x 1.7 x 1012. = 3.263831x101x1012 = 3.263831x1013.

That's a lot easier than trying to manipulate all those zeroes on the page!

4.005 x 10-3.

8.916 106 (8.916 x 106) in standard form is 8,916,000

1394x10-6

3.5x10-3.

4.0145 x 10^9

9.75x107

It is: 2.4983*10^-1

1 x 10 to the power of 2 is 1 x 102 or 10 x 10 or 100