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Scientific Notation
Scientific notation is the expression of a number based on the largest exponent of 10 for its value, where the form is a decimal number A x 10n.
6,389 Questions
What is the scientific notation of 25000000000?
2.5 x 109 is wrong.
2.5 x 109 would be "2500000000
The correct answer is 2.5 x 1010 or 25 x 109 (But this would not be in true scientific notation). Scientific notation is basically calculated by how many times you would move the decimal point (as a result of multiplying by 10). As follows.
2.5 x 109 = 2500000000
2.5 x 1010 = 25000000000
Not sure how old this question is but thought i would answer anyway.
Why is it important to use scientific notation?
Some numbers are so huge (like the mass of the sun=1.98892 × 1030 kilograms) that writing a number with thirty or so digits is difficult to manage. There are some numbers so small that we have the same problem (the mass of an electron is 9.10938188 × 10-31 kilograms). Scientific notation is actually clearer and simpler to write in these two cases.
Scientific notation is important IF you are going to understand some things in the universe. Some authors use Scientific notation to discuss the topics they are writing about. You will not understand what those authors are talking about without understanding Scientific notation.
How do you write 0.00450 in scientific notation?
To convert a number to scientific notation:
- write out the number starting with the first non-zero digit and continue until the last non-zero digit;
- put the decimal point after the first digit;
- count how many digits the decimal point needs to move to get back to where it was originally (if there was no decimal point as the number was a whole number it was "hiding" after the ones-digit, the last digit);
- if the decimal point need to move left make this count negative;
- write ×10 to the power of this count after the number written in step 2.
→ 0.00450 = 4.5 × 10^-3
How do you write something in scientific notation?
Scientific notation is usually used to represent large numbers (especially in astronomy).
Take the example 15 million, 320 thousand...You could write it as 15,320,000 but a shorter way would be...
15.32 x 106
What is the scientific notation of 5.050?
That would be 5.050 x 100
It seems hardly worth the effort.
What is 79 x 10 squared 5 in scientific notation?
I'm not sure what number "10 squared 5" is. Instead of 79 times 10 to the whatever that exponent turns out to be, make it 7.9 times 10 to the one more than that.
