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Current time:0:00Total duration:3:14

Video transcript

leah has nine roly-polies let's write that down leah has nine Rolie polies in her bughouse she has one more she has won more than didn't GaN a is I think how I would say that name how many Rolie polies does Dingaan a have Dingaan II have so that's what we need to figure out so we need to figure out how many Rolie polies does din gana have and so this right over here is our question mark now it's always good when you look at a word problem like this you say okay well didn't Ghani have more or less than Leah well it says she Leia has one more than than Ghani so Leah is going to have more and how much more one more so did Ghani is going to have one less than Leah if Lea has one more than than Ghani then didn't Ghani has one less than Leah so how do we write one less well we could just subtract one so this right over here this is one less one less this is saying that Dingaan a has one less than Leia so how much does isn't got a half well he's going to have eight Roly Polys eight Roly Polys now another way you could have done it you could have drawn Lee as Roly Polys 1 2 3 4 5 6 7 8 9 and that would have been them rolled up and you said okay that's one more than Dingaan a so Dingaan a has one less than this so one less than this you just take away one of these and you're left with you're left with 1 2 3 4 5 6 7 8 you're left with these right over there let's do one more of these whoops all right let's do one more so they tell us the mass of a small box is 7 grams less than the large box the mass of the small box is 6 grams so let's write that they tell us the small box small small box it has a mass of 6 and we need to figure out what is the mass what is the mass of the large box large large box this is what we need to figure out so this is a question mark now like we did in the last problem is a large box can have a larger max or a smaller mass and we should just look at the names of the Box we should look at what they tell us they tell us that the mass of the small box is 7 grams less than the large box so this the small box is 7 grams less than the large box and that's another way of saying that the large box is 7 grams more than the small box so another way to say 7 grams more the small box is 6 grams plus 7 grams that's 7 grams more that's going to equal the mass of the large box so what's the mass of the large box well 6 plus 7 is 13 6 plus 7 is 13 and we're done