To write 215 in standard form, you would simply write it as it is: 215. Standard form is the usual way of writing numbers, without any extra symbols or notation. It is essentially the standard or most common way of representing a number.
Two hundred fifteen thousandths (0.215) in standard form = 2.15 × 10-1
How do write 666 in standard form?
It is already in standard form.
That is the standard form!
You write 6.11 in standard form as 6.11 × 100
3,000,215,000
.215
215.54 is the same as 215 and 54/100 or 215 and 27/50 which can be written as the improper fraction 10777/50
Two hundred fifteen thousandths (0.215) in standard form = 2.15 × 10-1
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