 Okay, so here's another significant digit problem. So our significant figure problem, so what do we have here? A number, some of the units, right? Significant figure of certain digits, uncertain digits, and units, okay? So can anybody tell me any of those? Any of these things that I need? Units is grams. Okay, so G means grams. Is that s on air or not? Yes. Yes. Okay. Can you guys tell me anything else? What about uncertain digits? One. Oh, what is? Like we said, which one is it? The last zero. The last zero, okay? It's always the last digit. Or the last significant digit, I should say. The last significant digit. Okay, so that brings into mind a question. Well, I kind of gave it away just a second ago, right? So how many significant figures does this one have? Five. Five, right? What did I just say? The last significant figure is the one that's what? Uncertain. Uncertain, so I just underlined that for you guys, so I kind of gave that problem away. So I should have had everybody blasting me through the wall being like, how many significant figures are there in here? Five. Okay, yeah, that's better. And then, of course, certain digits now? Four. Four. Okay, cool. And I'm just going to ride up the equation up here really quick, but do you need me to solve it anymore? Or should we solve it one more time? Okay, we'll do it one more time. So a significant figure equals certain digits plus uncertain digits. Okay, so if you're having trouble, remember this equation. Okay. Uncertain digits? Four. Right? And we know that the uncertain digits is always one, so it's going to be plus. Like, even though we solved it with the uncertain, then significant, and then we're backing up with the certain. Okay. So what kind of zeros do we have here? Triline zeros. Okay, so these ones were significant. Can I say that trailing zeros are always significant? No. No, no, no, I can't, right? Why can't I know? How come these ones are significant? There's a decimal in the number, okay? So if there's a decimal in the number, then the trailing zeros are significant. So I'll write that and roll it in. But what does that mean? If there's no decimal, then what are your trailing zeros? They're insignificant, okay? So they're insignificant if there's no decimal. Any questions on this one? Can we kill it?