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Current time:0:00Total duration:0:56

so let's think about what 13 minus 6 is pause this video and see if you can figure that out and as a little bit of a hint i will give you these 10 frames where we can try to represent 13. remember 13 is going to be you're going to have 10 and then you're going to have another 3. that's 13. you have a 10 110 and then you have 3 and we essentially want to take away 6. so pause this video and try to do that all right so let's just take away 6. so let's take away that one that one i took away 2 3 4 5 6. and so how much do i have left well let's see in this 10 frame i can see that i have a 5 and then 2 more right over here so 5 and 2 is 7 or we could say 5 6 7 and so this is just going to be equal to 7.