6.21 x 105 = 621,000
-1.0 × 105 written in regular notation is -100,000
3.95 x 105 (Move the decimal 5 places.)
-1.0 × 105 written in regular notation is -100,000
From the starting decimal point of 100000.0, shift 5 decimal places to the left, so the exponent for base 10 is 5. Therefore, the number in scientific notation is: 1.0 x 105
9.32 x 105 already is in scientific notation.9.32 x 105 already is in scientific notation.9.32 x 105 already is in scientific notation.9.32 x 105 already is in scientific notation.
If the pont is a decimal point, then 1.01*102 If the point is a thousand separator, then 1,01*105 where the comma (,) stands for the decimal "point".
105
621 times 0.304 is 188.784, or 189 when you round it.
15.525 = 621/40
Just remember that there is one digit to the left of the decimal in scientific notation. All the other digits go on the right of the decimal. Then find an appropriate power of ten to write the rest of the number. Your 2042 is 3.76 x 105 in scientific notation.
4.1 × 105 written in regular notation is 410,000
Note that the number is same as 450000.0. Move 5 decimal places left to get: 4.5 x 105.