to write it in numbers
5.5 × 10-1This is not a number you would normally write in standard form. As it is very short. Usually numbers are written in standard form to save time.
arabic numbers or decimal numbers
Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, your example is written in standard form as: 84,000
9
Yes, in general it is.
Writing numbers in standard form is writing numbers regular. For example One million in standard form is 1,000,000.
to write it in numbers
The way you wrote it is the standard notation. Standard notation means to write the number in its standard form. So, a number such as 150 is simply written as 150 in standard notation. The same applies to decimals.
0.00000171 = 1.71 × 10-6
standard form
5.5 × 10-1This is not a number you would normally write in standard form. As it is very short. Usually numbers are written in standard form to save time.
It is 6.45*10^8 in scientific notation
it means that u write it with the decimal in the middle of the numbers
So you don't have to write out an incredible amount of zeroes. Imagine having to write 1x10 to the thousand in normal numbers. It's much easier to use standard form.
60,000
84600 is 8.46 x 104 in scientific notation.