Eight hundred sixty-four thousandths of a meter in standard form is 0.864 meters or 0.864m
That IS the standard form.
You write 20.7 in standard form as: 2.07 × 101
Standard form simply means to write the number: 3,000,296,556
Write in standard form 378.72
1 millionth of a metre in standard form is 1.0 × 10-6 metres.
Eight hundred sixty-four thousandths of a meter in standard form is 0.864 meters or 0.864m
Not sure what you mean by "standard form"; one way to write this is as 120 µm.
How do write 666 in standard form?
It is already in standard form.
That is the standard form.
That is the standard form!
That IS the standard form.
You write 83,539,131 in standard form as 8.3539131 × 107
You write 7.54103 in standard form as 7.54103 × 100
You write 6.11 in standard form as 6.11 × 100
You write 20.7 in standard form as: 2.07 × 101