d%? How? [Archive] - Wizards Community - Pages Merged by Solauren

d%? How? [Archive] - Wizards Community

Post/Author/DateTime Post
FrostWolf
03-21-07, 01:13 PM My brain stoped working and I don't remember how to roll for percents on tables. The knowledge WAS there, but it left me. I remember using 2d10s, one numbered 0~9, and the other 00~90. but is a 00 and a 0 100? Do you let 0=10?

Sorry to bother for such a trivial matter, but it bothers me that I can't remember something so small.

(Grumble.... gonna get meself a d100 one day.....)
cwslyclgh
03-21-07, 01:34 PM yeah roll two d10, one counts as the tens place, one counts as the ones place, a 0 counts as a0, unless you roll 00 in which case it is 100.
Someone
03-21-07, 01:35 PM Sort of. If you're using dice labeled 1-10, just have 10 = 0. When the "tens" d10 is a 10, you end up with 1-9. But if the "ones" d10 is also a 10, you have 100. You basically set 0 to equal 100.

There are also fancy dice labeled 00-90, so you can roll them with a normal d10 at the same time, and just add them up- i.e. 90 + 10 = 100.

Or one of those whopping huge 100-sided dice.
pres_man
03-21-07, 04:27 PM My brain stoped working and I don't remember how to roll for percents on tables. The knowledge WAS there, but it left me. I remember using 2d10s, one numbered 0~9, and the other 00~90. but is a 00 and a 0 100? Do you let 0=10?
Rolling a d10 is slightly different then rolling 2d10's to be used as percentages.

Standard d10's have markings 0-9 on them. Now we know that 0 = 10 when rolling for things like damage and such (you don't get 0 when you roll a 0). This is because they try to keep the number of digits the same on each side to help balance it out. Another way to think of this is modular arithmetic. You are using a mod 10 arithmetic which means each multiple of 10 ~ 0. So going the other way, if you get a 0, it is like you getting a 10 since they are equivalent.

Now for percentage, for the most part (01-99) you should just be reading the numbers. If you roll a 20 and a 5 that is 25 (20+5). If you roll a 20 and a 0 that is 20 (20+0). So if you roll 00 and 3 that is 3 (00+3). The only exception to this is when you roll a 00 and a 0, this is 100 not 0. The reason is simple, we want to get numbers from 1-100 not numbers from 0-99. Thus if you roll a 0 (00+0) we say that is equivalent to 100 (100 modular arithmetic).

So when rolling percent dice, just read the dice, except in the case of 00+0 which is 100. With that in mind you will clearly get numbers from 1-100 and not numbers 0-99 (though these are equivalent).
Solaris
03-21-07, 04:35 PM you will clearly get numbers from 1-100 and not numbers 0-99 (though these are equivalent).

No they aren't. In the latter situation you must roll less than the target value instead of less than or equal to it.
pres_man
03-21-07, 05:36 PM No they aren't. In the latter situation you must roll less than the target value instead of less than or equal to it.
The probability of each value is the same is what I meant. The probability of rolling a 0 using 0-99 = 1%, the probability of rolling a 100 using 1-100 = 1%. The probabilities are the same.
DarkNick
03-21-07, 05:47 PM I've always rolled a d10 and a d20 for percentile. The d10 is the 10's and the d20 is the single number dice (though you only look at the last number i.e. a 12 = 2, a 10 and a 20 equals a 0). Amounts to the same thing as rolling two
d10.

For some reason I don't like the percentile d10's with the double enumbers on them. They just bug me.

Not sure if everyone was clear enough about how it works.

Basically the dice that has 00-90 is the tens dice. The 0-9 dice is the single digit dice. you just add the numbers together, so if you roll 80 and 7 then you get 87. If you rolled 00 and 7 you would have 7. If you rolled 80 and 0 then you would have 80. But if you rolled 00 and 0 you get 100!

You can use any old d10 too - just nominate one dice as the 10's. I happen to use a d20 as the second dice as it helps differentiate it from the first.
Solaris
03-21-07, 06:06 PM I just use two normal d10s of different colors, with one color nominated to be the tens die. It doesn't get any simpler than that: 0,3 = 3, 4,2 = 42, 0,0 = 100.
TheRealOrion
03-21-07, 07:42 PM I can't believe there's a whole thread on this. Back in the day, when you bought dice you only got one d10, so you rolled it twice. Was exciting if you rolled a 0, though, because it was suddenly 1 in 10 that you got 100!
Solaris
03-21-07, 08:14 PM It could be worse. For a while we were getting a thread a week from people wondering what a d3 is.
Ranger REG
03-21-07, 09:00 PM My brain stoped working and I don't remember how to roll for percents on tables. The knowledge WAS there, but it left me. I remember using 2d10s, one numbered 0~9, and the other 00~90. but is a 00 and a 0 100? Do you let 0=10?

Sorry to bother for such a trivial matter, but it bothers me that I can't remember something so small.

(Grumble.... gonna get meself a d100 one day.....)
If you have those Tens dice (a d10 with single digits and a d10 with tens digits):

00 + 0 = 100
00 + 1 = 1

Any other numbers (for example):

90 + 3 = 93

OR... you could invest in a d100 and wait for it to stop (it's practically a golf ball with nubs).
Nom
03-22-07, 12:41 AM Some WotC publications recommend reading percentile dice (with the 00 tens die and '10' on the units die) as tens + units, thus 00 + 10 = 10 and 90 + 10 = 100. I prefer the traditional method.
FrostWolf
03-22-07, 01:04 AM ahhhhh. Thank you all very much for the refresher.:bow:

And I will get myself a d100, if only becouse it is what I am according to the "What die are you" test.
pres_man
03-22-07, 01:59 AM Some WotC publications recommend reading percentile dice (with the 00 tens die and '10' on the units die) as tens + units, thus 00 + 10 = 10 and 90 + 10 = 100. I prefer the traditional method.
I do as well, that other method is too much extra math for me.
Ranger REG
03-22-07, 03:37 AM Some WotC publications recommend reading percentile dice (with the 00 tens die and '10' on the units die) as tens + units, thus 00 + 10 = 10 and 90 + 10 = 100.
No way! :evillaugh

You have GOT to cite me those publications.
draco1119
03-22-07, 03:51 AM No way! :evillaugh

You have GOT to cite me those publications.
Believe it or not, I think I've seen it in either the PHB, PHB2, or Unearthed Arcana...
Ranger REG
03-22-07, 04:02 AM Believe it or not, I think I've seen it in either the PHB,...
Must not be in the Special Edition Printing PHB v.3.5 (both leatherbound and standard-bound).

Post/Author/DateTime	Post
FrostWolf 03-21-07, 01:13 PM	My brain stoped working and I don't remember how to roll for percents on tables. The knowledge WAS there, but it left me. I remember using 2d10s, one numbered 0~9, and the other 00~90. but is a 00 and a 0 100? Do you let 0=10? Sorry to bother for such a trivial matter, but it bothers me that I can't remember something so small. (Grumble.... gonna get meself a d100 one day.....)
cwslyclgh 03-21-07, 01:34 PM	yeah roll two d10, one counts as the tens place, one counts as the ones place, a 0 counts as a0, unless you roll 00 in which case it is 100.
Someone 03-21-07, 01:35 PM	Sort of. If you're using dice labeled 1-10, just have 10 = 0. When the "tens" d10 is a 10, you end up with 1-9. But if the "ones" d10 is also a 10, you have 100. You basically set 0 to equal 100. There are also fancy dice labeled 00-90, so you can roll them with a normal d10 at the same time, and just add them up- i.e. 90 + 10 = 100. Or one of those whopping huge 100-sided dice.
pres_man 03-21-07, 04:27 PM	My brain stoped working and I don't remember how to roll for percents on tables. The knowledge WAS there, but it left me. I remember using 2d10s, one numbered 0~9, and the other 00~90. but is a 00 and a 0 100? Do you let 0=10? Rolling a d10 is slightly different then rolling 2d10's to be used as percentages. Standard d10's have markings 0-9 on them. Now we know that 0 = 10 when rolling for things like damage and such (you don't get 0 when you roll a 0). This is because they try to keep the number of digits the same on each side to help balance it out. Another way to think of this is modular arithmetic. You are using a mod 10 arithmetic which means each multiple of 10 ~ 0. So going the other way, if you get a 0, it is like you getting a 10 since they are equivalent. Now for percentage, for the most part (01-99) you should just be reading the numbers. If you roll a 20 and a 5 that is 25 (20+5). If you roll a 20 and a 0 that is 20 (20+0). So if you roll 00 and 3 that is 3 (00+3). The only exception to this is when you roll a 00 and a 0, this is 100 not 0. The reason is simple, we want to get numbers from 1-100 not numbers from 0-99. Thus if you roll a 0 (00+0) we say that is equivalent to 100 (100 modular arithmetic). So when rolling percent dice, just read the dice, except in the case of 00+0 which is 100. With that in mind you will clearly get numbers from 1-100 and not numbers 0-99 (though these are equivalent).
Solaris 03-21-07, 04:35 PM	you will clearly get numbers from 1-100 and not numbers 0-99 (though these are equivalent). No they aren't. In the latter situation you must roll less than the target value instead of less than or equal to it.
pres_man 03-21-07, 05:36 PM	No they aren't. In the latter situation you must roll less than the target value instead of less than or equal to it. The probability of each value is the same is what I meant. The probability of rolling a 0 using 0-99 = 1%, the probability of rolling a 100 using 1-100 = 1%. The probabilities are the same.
DarkNick 03-21-07, 05:47 PM	I've always rolled a d10 and a d20 for percentile. The d10 is the 10's and the d20 is the single number dice (though you only look at the last number i.e. a 12 = 2, a 10 and a 20 equals a 0). Amounts to the same thing as rolling two d10. For some reason I don't like the percentile d10's with the double enumbers on them. They just bug me. Not sure if everyone was clear enough about how it works. Basically the dice that has 00-90 is the tens dice. The 0-9 dice is the single digit dice. you just add the numbers together, so if you roll 80 and 7 then you get 87. If you rolled 00 and 7 you would have 7. If you rolled 80 and 0 then you would have 80. But if you rolled 00 and 0 you get 100! You can use any old d10 too - just nominate one dice as the 10's. I happen to use a d20 as the second dice as it helps differentiate it from the first.
Solaris 03-21-07, 06:06 PM	I just use two normal d10s of different colors, with one color nominated to be the tens die. It doesn't get any simpler than that: 0,3 = 3, 4,2 = 42, 0,0 = 100.
TheRealOrion 03-21-07, 07:42 PM	I can't believe there's a whole thread on this. Back in the day, when you bought dice you only got one d10, so you rolled it twice. Was exciting if you rolled a 0, though, because it was suddenly 1 in 10 that you got 100!
Solaris 03-21-07, 08:14 PM	It could be worse. For a while we were getting a thread a week from people wondering what a d3 is.
Ranger REG 03-21-07, 09:00 PM	My brain stoped working and I don't remember how to roll for percents on tables. The knowledge WAS there, but it left me. I remember using 2d10s, one numbered 0~9, and the other 00~90. but is a 00 and a 0 100? Do you let 0=10? Sorry to bother for such a trivial matter, but it bothers me that I can't remember something so small. (Grumble.... gonna get meself a d100 one day.....) If you have those Tens dice (a d10 with single digits and a d10 with tens digits): 00 + 0 = 100 00 + 1 = 1 Any other numbers (for example): 90 + 3 = 93 OR... you could invest in a d100 and wait for it to stop (it's practically a golf ball with nubs).
Nom 03-22-07, 12:41 AM	Some WotC publications recommend reading percentile dice (with the 00 tens die and '10' on the units die) as tens + units, thus 00 + 10 = 10 and 90 + 10 = 100. I prefer the traditional method.
FrostWolf 03-22-07, 01:04 AM	ahhhhh. Thank you all very much for the refresher.:bow: And I will get myself a d100, if only becouse it is what I am according to the "What die are you" test.
pres_man 03-22-07, 01:59 AM	Some WotC publications recommend reading percentile dice (with the 00 tens die and '10' on the units die) as tens + units, thus 00 + 10 = 10 and 90 + 10 = 100. I prefer the traditional method. I do as well, that other method is too much extra math for me.
Ranger REG 03-22-07, 03:37 AM	Some WotC publications recommend reading percentile dice (with the 00 tens die and '10' on the units die) as tens + units, thus 00 + 10 = 10 and 90 + 10 = 100. No way! :evillaugh You have GOT to cite me those publications.
draco1119 03-22-07, 03:51 AM	No way! :evillaugh You have GOT to cite me those publications. Believe it or not, I think I've seen it in either the PHB, PHB2, or Unearthed Arcana...
Ranger REG 03-22-07, 04:02 AM	Believe it or not, I think I've seen it in either the PHB,... Must not be in the Special Edition Printing PHB v.3.5 (both leatherbound and standard-bound).