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so they tell us that Alexander has nine marbles Emily has five marbles and then were asked how many more marbles does Alexander have than Emily so pause the video and try to see if you could figure this out now let's work this together work this out together so let's just draw it out Alexander has nine marbles so we could draw his marbles so one two three four five six seven eight nine and Emily has five marbles one two three four five so how many more marbles does Alexander have than Emily well we could see it in this picture right over here Alexander these are all the so this is up till up until this point this is the same number that Alexander has is Emily and then Alexander has Alexander has we see it right over here he has one two three four more marbles now what's another way that we could have thought about it well Alexander Alexander has nine marbles and if you were to subtract the number of marbles Emily has that's how much more marbles and Alexander has that's how much more nine is in five so you could have said nine minus five is equal to is equal to the 4 the 4 marbles that's how much more marbles Alexander has then Emily let's do another one of these Noah was mailing two letters the heavier letter the heavier letter had eight stamps the lighter letter had five fewer stamps how many stamps did the lighter letter have so once again try to pause this video and see if you can figure it out on your own so the heavier letter it's always useful to just well what are they telling us so they're saying just write down whatever whatever information they give us so the heavier letter has eight stamps the lighter letter has five fewer stamps so do we know how many still lighter letter has well not immediately that's what they actually asking us how many stamps at the lighter letter have but it's five fewer five fewer than what five fewer than eight stamps and so we could write that if we have eight stamps and we want to go five fewer than that five fewer well that's going to be 8 minus 5 this is 5 fewer than 8 which is going which is going to be equal to 3 the lighter letter has 3 stamps now another way you could have thought about it the heavier letter had 8 stamps let's draw 8 stamps so 1 2 3 4 5 6 7 & 8 that's how much the heavier letter had the lighter letter had five fewer stamps let's take away 1 2 3 4 5 and what are you going to be left with well you're going to be left with these 3 stamps right over here this is how many stamps the lighter letter had