Twelve
To write 12 more than B, you would write the expression as B + 12. This means you are adding 12 to the value of B.
twelve
-3
To write 12 in Roman numerals, you would use the symbol "XII".
I would write it as 9.5*10^12 but you can write it out, in full, as 9,500,000,000,000.
2t/12
112
12C
12c
this would be 1.31x10^12
You would write it as $12,000,290
5/12