No you don't, that's the whole purpose of the Forever stamps, they are valid for one ounce of First Class Postage at any rate.
No, the Forever stamps is valid for the first ounce of First Class mail, regardless of the current rate.
Not to mail an ounce of first class mail. If it is more than an ounce, you do have to add additional postage.
If it says 44 cents on it, yes, you have to add a 1 cent stamp to it to make the current rate. If it say FOREVER on the stamp, you do not need to add another stamp.
no
If it says 44 cents on it, yes, if you add a one cent stamp to it so that it equals 45 cents. If it says Forever on it, you do not need to add any postage to use it.
it can weigh up to one ounce using one stamp
US stamps come in different denominations, but if you just asked for a stamp you would probably get a 44 -cent stamp which pays postage on a letter of up to one ounce. The "forever" stamps currently are considered to be 44-cent denomination.
You can still use the stamp. However, you need to add additional value to the stamp with smaller values to equal the 44 cent cost of mailing a letter.
One, as long as it is a 44 cent stamp.
You can purchase 1 cent or 2 cent stamps.
One, as long as it is a 44 cent stamp.
You will need one .44 cent stamp for a standard one ounce letter.
You will need one .44 cent stamp for a standard one ounce letter.
Yes as long as you add enough other stamps to equal the amount due which is currently 44 cents for a standard size one ounce letter.
The total number of stamps doesn't matter as long as they make a total of 61 cents of postage. You can use one 61 stamp, or a 44 cent with a 17 cent stamp. Or you can use 61 one cent stamps.
Domestically one ounce and Internationally half an ounce.