Twenty-one million eighty thousand and twenty
'51.93' is not an equation. It's a number. When you write or speak it, it comes out "fifty-one and ninety-three hundredths".
write something about math. then change the words to make it rhyme
One and three tenths.
Twice a number would be written as 2x.
Write a number with a pencil. If you erase it, then it DISAPPEARS!
2n + (-5)
word form is using words to write a #
Twenty-seven and eighty-seven thousandths.
Forty five point four nine.
9 to the power of 2 = 81
Oh, dude, written form in math terms just means expressing numbers using words instead of digits. So, like, instead of writing 123, you would write "one hundred twenty-three." It's basically just showing off your vocabulary skills while doing math.
That probably means that you describe something in words.