You absolutely do treat the d10 how you always treat it; the "tens" die is not a d10, it is a percentile die. The "ones" die is a d10. You always treat a roll of "0" on a d10 as 10. Percentile die may have 10 sides, but they are not d10s.
Also, as a bit of an addition, many d10s - especially older ones - have a side that says "10" instead of saying "0." Therefore if you use one of these d10s (I have several) to roll d100, and do it the RAW way, you'd have to read a roll of "00" on the percentile die and "10" on the d10 as 100, which is wild.
You absolutely do treat the d10 how you always treat it; the "tens" die is not a d10, it is a percentile die. The "ones" die is a d10. You always treat a roll of "0" on a d10 as 10. Percentile die have 10 sides, but they are not d10's.
Also, as a bit of an addition, many d10's - especially older ones - have a side that says "10" instead of saying "0." Therefore if you use one of these d10's (I have several) to roll d100, and do it the RAW way, you'd have to read a roll of "00" on the percentile die and "10" on the d10 as 100, which is wild.
And if you use your method with two of these dice you'd have to read two 10s as 10, which is wild.
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True, but not any more wild than reading "00, 0" as 100 ¯\_(ツ)_/¯ however, you typically don't use two d10's, you use a percentile die and a d10. In my system, you'd never have "10, 10," you'd have "00, 10," which would be 10. In the RAW system, you have "00, 0," (or, with a die like the one in the picture, a "00, 10") and have to read that as 100.
As I said before, to each their own; I've seen both done, and the RAW system is probably more common; clearly it's the suggested system not just in D&D but in some other TTRPG's as well. I just think using a system where you have to make a glaring change to how you read the dice 1% of the time for no real reason is odd.
True, but not any more wild than reading "00, 0" as 100 ¯\_(ツ)_/¯ however, you typically don't use two d10's, you use a percentile die and a d10. In my system, you'd never have "10, 10," you'd have "00, 10," which would be 10. In the RAW system, you have "00, 0," (or, with a die like the one in the picture, a "00, 10") and have to read that as 100.
As I said before, to each their own; I've seen both done, and the RAW system is probably more common; clearly it's the suggested system not just in D&D but in some other TTRPG's as well. I just think using a system where you have to make a glaring change to how you read the dice 1% of the time for no real reason is odd.
I believe that RAW is arranged as it is so that the tens number is clear and representative most of the time. If you roll a 90 and a 0, that is 90 under RAW, but in your system, that would be 100. I don't think your method is bad; it all comes out the same in the end I guess. I just like that a 90 will always be in the 90s under RAW, 80 will always be in the 80s, etc. Under RAW, there is just one outcome where the numbers have a different meaning, but with your method, every tens face has two possible meanings.
You absolutely do treat the d10 how you always treat it; the "tens" die is not a d10, it is a percentile die. The "ones" die is a d10. You always treat a roll of "0" on a d10 as 10. Percentile die may have 10 sides, but they are not d10s.
Also, as a bit of an addition, many d10s - especially older ones - have a side that says "10" instead of saying "0." Therefore if you use one of these d10s (I have several) to roll d100, and do it the RAW way, you'd have to read a roll of "00" on the percentile die and "10" on the d10 as 100, which is wild.
Oh, I see your confusion.
A die labeled 1 through 10 is a d10. A die labelled 0 through 9 is one half of a percentile die set.
If you use a percentile die as a regular d10, "how you interpret a 0" will, indeed, change between the two types of rolls (and since most modern die sets re-use the 1s-place percentile die as the d10...). But in percentile dice, a 0 is a 0, always, and the convention "treat 00,0 as 100" is simply to cover tables being 1-100 instead of 0-99.
Just to add my two cents into the conversation, if a 0 on the d10 is always meant to be a 10 even when rolling percentile dice, then why do they print a 0 instead of a 10? Surely its meant to be a 0 in at least some situations. I get that it may seem strange to have a different rule for the d10 when rolling percentile dice, but arriving at the conclusion that they printed a 0, but always mean 10, is strange too, isn't it?
A die labelled 0 through 9 is a d10, not half a percentile "set." At least, not colloquially; there's no true definition, so call it what you want. People tend to call a d10 a d10 and a percentile die a percentile die; they're - again, colloquially - different things, though used together to roll a d100.
As for why some d10 have a 0 instead of a 10? Symmetry? I dunno. You can certainly buy them individually, it's not like they only come as part of a "set" with a percentile die. I've bought many alone, and I've bought many dice sets that have a d10 with 0-9 but don't include a percentile die along with them.
Anyway, arguing about this is pointless and unnecessary, and this is far from the first time this has been discussed; it's an argument as old as percentile die themselves. There's a couple ways to do it, one is RAW in D&D, but both are ultimately fine.
Just to add my two cents into the conversation, if a 0 on the d10 is always meant to be a 10 even when rolling percentile dice, then why do they print a 0 instead of a 10? Surely its meant to be a 0 in at least some situations. I get that it may seem strange to have a different rule for the d10 when rolling percentile dice, but arriving at the conclusion that they printed a 0, but always mean 10, is strange too, isn't it?
One potential reason could have traditions or manufacturing limitations. D10s were first made in the early 80s and replaced D20s numbered 0-9 twice that was used from the 50s. The plastic used, at for least those early D20s, was relatively soft compared to what we have now and prone to wear and may not have held the number easily so using a single digit may have been a limitation at the time. My wife has a d20 from when she first played and the numbering has worn off (she inked/painted the numbers in, the came uncolored), there is obvious wear on the die, particularly on the edges, and it is moderately difficult to read them.
Now we have ridiculously tiny dice, exotic materials, elaborate designs, new shapes, and other variations (D24, D30, D60). The idea of a double D10 probably would blown some minds in the 80s. However, the traditions of the early designs have to some degree carried forward. 0-9 is now iconic. Rolling two 10s to read as a 100 would be strange, but for 1-10 rolls, they do make d10s numbered 1-10.
Source for dates. The technical limitations of the materials used or the process at the time are based on my speculation.
There is/was a company that specialized in mathematically precise polyhedral dice and they had some neat shapes. Unfortunately, I don't recall their name and the novelty was likely lost with the boon of digital dice rollers. Edit: It might be The Dice Lab (their Orbiform D4s are lovely.)
replaced D20s numbered 0-9 twice that was used from the 50s
I totally forgot about those
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I don't find it counterintuitive at all; 0 on a d10 is 10, always has been. Personally I find treating a 0 on a d10 as anything but 10 to be counterintuitive.
Adding 10 to something isn't difficult, and any other time you're rolling a d10 - for damage or whatever else - rolling 0 is always 10 and you simply add it to what you're rolling for. It's not counterintuitive then, is it? You don't attack with a Glaive, roll 0 on the d10, and go "well, I do 0 damage, because 10 would be counterintuitive." But otherwise, I agree. And I will say it is... visually satisfying, when rolling anything other than 00 + 0, to do it the way you guys have suggested. Rolling 70 and 0 and calling it 70 looks nice, but I just - personally - can't look at a 0 on a d10 and think anything other than "that's 10." Plus the thought of rolling 00 + 0 and saying "that's 100" I find strange. Again, however, personal taste; to each their own, and clearly the core rules say to do it that way.
I'm gonna chime in with one point about this: When using a d10 as part of a percentile dice set, it's part of a greater piece. It doesn't follow the same exact rules as a d10 in an isolated roll, meaning 0 as 10 doesn't necessarily apply.
0/00 is 100 unless specified that it's a 0-99 scale, then it's 0.
Remember this: The double-digit die is the tens digit at all times. So "00" means it's a 0 at the start. A 100 is caused by 0/00 being either 0 or 100 and 0 not being an option. But 00/x is 0x.
To understand why D10’s have different printings of a 10 or a zero is because a percentage die is numbered 0 to 9, and a true D10 is numbered 1 to 10. Thats how a person can tell the difference. It’s also why a roll of 00,0 on percentage dice equals 100, as it allows for values of 01 to 09 without confusing which D10 is the ones value and which one is the tens value.
If a die that is a D10 and has a 10 printed on it means the ability for it to be used as a percentage die is the 10 represents a 0 and the other die should have 00 to 90 on the faces. So a roll of 00,10 would equal 0 and the greatest number that could be rolled is 99( 90,9. A roll of 90,10 is equal to 90. )
So modern day d10’s are printed 1 to 0 and 0 is considered a 10 unless it’s used as a percentage die where it is considered the ones place die.
I think we have the wizard and/or fireball dice. :D
We also have some generator dice, but not the ones that she showed. I think it's a set of D6s. I think we have some for generating dungeon layouts and maybe weather on top of other things.
You absolutely do treat the d10 how you always treat it; the "tens" die is not a d10, it is a percentile die. The "ones" die is a d10. You always treat a roll of "0" on a d10 as 10. Percentile die may have 10 sides, but they are not d10s.

Also, as a bit of an addition, many d10s - especially older ones - have a side that says "10" instead of saying "0." Therefore if you use one of these d10s (I have several) to roll d100, and do it the RAW way, you'd have to read a roll of "00" on the percentile die and "10" on the d10 as 100, which is wild.
And if you use your method with two of these dice you'd have to read two 10s as 10, which is wild.
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True, but not any more wild than reading "00, 0" as 100 ¯\_(ツ)_/¯ however, you typically don't use two d10's, you use a percentile die and a d10. In my system, you'd never have "10, 10," you'd have "00, 10," which would be 10. In the RAW system, you have "00, 0," (or, with a die like the one in the picture, a "00, 10") and have to read that as 100.
As I said before, to each their own; I've seen both done, and the RAW system is probably more common; clearly it's the suggested system not just in D&D but in some other TTRPG's as well.
I just think using a system where you have to make a glaring change to how you read the dice 1% of the time for no real reason is odd.
I believe that RAW is arranged as it is so that the tens number is clear and representative most of the time. If you roll a 90 and a 0, that is 90 under RAW, but in your system, that would be 100. I don't think your method is bad; it all comes out the same in the end I guess. I just like that a 90 will always be in the 90s under RAW, 80 will always be in the 80s, etc. Under RAW, there is just one outcome where the numbers have a different meaning, but with your method, every tens face has two possible meanings.
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Oh, I see your confusion.
A die labeled 1 through 10 is a d10. A die labelled 0 through 9 is one half of a percentile die set.
If you use a percentile die as a regular d10, "how you interpret a 0" will, indeed, change between the two types of rolls (and since most modern die sets re-use the 1s-place percentile die as the d10...). But in percentile dice, a 0 is a 0, always, and the convention "treat 00,0 as 100" is simply to cover tables being 1-100 instead of 0-99.
Just to add my two cents into the conversation, if a 0 on the d10 is always meant to be a 10 even when rolling percentile dice, then why do they print a 0 instead of a 10? Surely its meant to be a 0 in at least some situations. I get that it may seem strange to have a different rule for the d10 when rolling percentile dice, but arriving at the conclusion that they printed a 0, but always mean 10, is strange too, isn't it?
A die labelled 0 through 9 is a d10, not half a percentile "set." At least, not colloquially; there's no true definition, so call it what you want. People tend to call a d10 a d10 and a percentile die a percentile die; they're - again, colloquially - different things, though used together to roll a d100.
As for why some d10 have a 0 instead of a 10? Symmetry? I dunno. You can certainly buy them individually, it's not like they only come as part of a "set" with a percentile die. I've bought many alone, and I've bought many dice sets that have a d10 with 0-9 but don't include a percentile die along with them.
Anyway, arguing about this is pointless and unnecessary, and this is far from the first time this has been discussed; it's an argument as old as percentile die themselves. There's a couple ways to do it, one is RAW in D&D, but both are ultimately fine.
One potential reason could have traditions or manufacturing limitations. D10s were first made in the early 80s and replaced D20s numbered 0-9 twice that was used from the 50s. The plastic used, at for least those early D20s, was relatively soft compared to what we have now and prone to wear and may not have held the number easily so using a single digit may have been a limitation at the time. My wife has a d20 from when she first played and the numbering has worn off (she inked/painted the numbers in, the came uncolored), there is obvious wear on the die, particularly on the edges, and it is moderately difficult to read them.
Now we have ridiculously tiny dice, exotic materials, elaborate designs, new shapes, and other variations (D24, D30, D60). The idea of a double D10 probably would blown some minds in the 80s. However, the traditions of the early designs have to some degree carried forward. 0-9 is now iconic. Rolling two 10s to read as a 100 would be strange, but for 1-10 rolls, they do make d10s numbered 1-10.
Source for dates. The technical limitations of the materials used or the process at the time are based on my speculation.
There is/was a company that specialized in mathematically precise polyhedral dice and they had some neat shapes. Unfortunately, I don't recall their name and the novelty was likely lost with the boon of digital dice rollers. Edit: It might be The Dice Lab (their Orbiform D4s are lovely.)
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I totally forgot about those
Active characters:
Carric Aquissar, elven wannabe artist in his deconstructionist period (Archfey warlock)
Lan Kidogo, mapach archaeologist and treasure hunter (Knowledge cleric)
Mardan Ferres, elven private investigator obsessed with that one unsolved murder (Assassin rogue)
Xhekhetiel, halfling survivor of a Betrayer Gods cult (Runechild sorcerer/fighter)
Solution?
P.S. I'm not a fan of those :D
Or just rolling digitally :P yay VTT's.
7
Roll a d100.
...
...
What did you roll?
I'm still waiting for it to stop...
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I'm gonna chime in with one point about this: When using a d10 as part of a percentile dice set, it's part of a greater piece. It doesn't follow the same exact rules as a d10 in an isolated roll, meaning 0 as 10 doesn't necessarily apply.
Thanks that clears everything up 👍
I'm not rolling one of those goofy things. I'll use my dice app or the DnD Beyond app before using that.
It can be fun for the novelty, but the novelty wears off. Same thing with a steel d20 (especially a large one).
d20s that light up on a natural 20 never go out of style though. ;)
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To understand why D10’s have different printings of a 10 or a zero is because a percentage die is numbered 0 to 9, and a true D10 is numbered 1 to 10. Thats how a person can tell the difference. It’s also why a roll of 00,0 on percentage dice equals 100, as it allows for values of 01 to 09 without confusing which D10 is the ones value and which one is the tens value.
If a die that is a D10 and has a 10 printed on it means the ability for it to be used as a percentage die is the 10 represents a 0 and the other die should have 00 to 90 on the faces. So a roll of 00,10 would equal 0 and the greatest number that could be rolled is 99( 90,9. A roll of 90,10 is equal to 90. )
So modern day d10’s are printed 1 to 0 and 0 is considered a 10 unless it’s used as a percentage die where it is considered the ones place die.
Or everything in this video
https://youtu.be/s32DHXGg7yM?si=qSUIEHshA2MMBXO4
And then there's these dice
https://youtu.be/t5vsy1QH1WE?si=T9UIcOVWpHN4D68F
I think we have the wizard and/or fireball dice. :D
We also have some generator dice, but not the ones that she showed. I think it's a set of D6s. I think we have some for generating dungeon layouts and maybe weather on top of other things.
How to add Tooltips.