No. Infinitely Small implies something that is as close to zero as it can get without actually being zero - think of a positive or negative fraction with an infinitely large denominator. Infinitely Big implies something that is as far away from zero as possible, and then some: negative infinity or positive infinity. You can think of infinitely small as being the reciprocal of (one divided by) infinitely big.
A fraction is close to zero if the numerator is small or if the denominator is large, or both.
Any fraction that has a zero as the numerator equals zero. Any fraction that does not have a zero in the numerator would be a nonzero fraction.
There is no such thing as "closest". If you name a fraction, then no matter how small it is, I can always name one that's smaller ... all I have to do is make the denominator bigger than yours, and my fraction is closer to zero than yours is.
The fraction is zero. 0 divided by anything except zero is zero.
The rule is if the numerator is zero than the value of the fraction is zero.
Zero can be neither the numerator nor the denominator of a fraction.
"Zero point" is 0. It is an integer, not a fraction.
-9 over anything but zero is a fraction. Division by zero is undefined.
You can't change a fraction when the numerator is zero because no matter what the denominator is the fraction is still zero. A zero denominator is not allowed because you cannot divide by zero.
Zero
No.