If you are twelve years old than you are in grade 6 of course you ll have to do some math.
A decagon has twelve angles. This is a shape used in math.
Twelve F on a D is a fraction. This is a math equation.
That is negative twelve. It means 12 less than zero.
The difference of eight and twelve is four. This is a math problem.
there are twelve inches to a foot, and there are 2.54 centimeter to an inch. Now you do the math.
Twelve billion, one hundred thousand, eight and three thousandths.
The most correct standard form for 12.12 is "twelve point one two." The form "twelve and twelve one-hundredths" is also correct but is not the standard form. The common form "twelve point twelve" may be used from time to time (even by math teachers) but is not a correct form.
A clock is modular math. It has a base twelve. We use a base ten. If the clock had ten hours in a half day then the remainder when dividing would always be our answer.
Twelve inches in a foot, three feet in a yard. It's 36, simple math.