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Current time:0:00Total duration:3:59

so I have the number 235 and we can think of that as 200s we have a two in the hundreds place so two hundred three tens we have a 3 in the tens place so three tens and five ones we have a five in the ones place and over here I've actually drawn it out with that many boxes this is 235 boxes so you have two groups of a hundred boxes so this is 200 s then we have three tens one two three and then we have five ones now let's try some interesting things here so what happens if I were to add add 10 here well adding 10 we're just adding 110 we're just adding 110 so if we add 110 what's going to happen well over here I need to add one more 10 I got to add this 10 so what's it going to look like well that the next 10 is going to look like this let me see if I can draw it pretty fast so we have one two three four five six seven eight nine and ten one two three four five six seven eight nine ten so I just added a 10 so what does that leave us with well if I had three if I had 3 tens and I have one more 10 now now I'm going to have four tens now I'm going to have four tens let me do that in that yellow color so now I'm going to have four tens I'm still going to have five ones five ones I'm still going to have five ones I'm not adding any ones there so I'm still going to have five ones and I'm still going to have 200 so I'm not adding any hundreds there so I'm still going to have to hundreds to hundreds so now it's going to be 200 s plus four tens plus 5 ones two hundreds plus four tens plus five ones well what's that going to be well two hundreds plus four tens plus five ones 245 let's do one more instead of adding a ten let's add one hundred so let's do that let me see if I can clear all this stuff out so so instead of adding 10 let's add 100 here so I'm going to add so plus let's add 101 I'll let you do it in yellow and blue so I'm adding 100 zero tens and zero ones so essentially just adding 100 so this is going to be equal to so plus 100 so plus 100 so what's that going to get me well let me draw it out here let me copy and paste I have two hundreds before but now I'm going to add 100 so let me just copy that and let me paste it so now how many hundreds do I have how many hundreds do I have now well now I have one two three hundreds I have three hundreds so over here I had two hundreds I'm adding one more hundred right over here so now I have three hundreds over here I could say that now I have three three hundreds now our the number of tens have they changed now I had 3 tens before and I'm not adding tens this time so I'm still going to have three tens and I had five once before and I'm not adding any more ones so I still have five ones so I have three hundred and thirty-five which is the same thing as three hundreds plus 3 tens plus 3 tens plus 5 ones plus five ones