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# Word problem: making change

CCSS.Math:

## Video transcript

Charles bought five apples that cost forty-seven cents each he paid with a five dollar bill five dollar bill how much change did Charles receive so let's think about everything in cents since they gave us the cost in terms of cents so first of all how much would the five apples cost well we got five apples five apples we do in that same green color we have five apples and each of those apples are going to cost 47 cents so five apples times 47 cents per Apple times 47 cents this will give us the total cost of the five apples in cents so what's five times 47 well let's see five times forty is two hundred five times seven is thirty-five so it's going to be two hundred and thirty five cents so it's two hundred two hundred and thirty five and just to remind ourselves this is two hundred and thirty five cents now how much did he pay he paid with a five dollar bill well a five dollar bill is going to be how many cents well let's think about it a five dollar bill five dollar bill times 100 cents per dollar he's essentially paying with five hundred cents five hundred cents so this is this right over here is the cost and then this is what he paid so we could figure out how much change he needs to get back in terms of cents so he paid five hundred he paid five hundred the cost was 235 235 so we just need to subtract and you might be able to do this in your head but in case you can't we can solve this we can do this by regrouping we have a zero in the ones place we have a zero in the tens place but let's try to regroup from the hundreds place we could take one of the hundreds so now we have only 400 left and 100 is equal to ten tens so we could put a ten in the tens place but then we could take one of those tens away so we only have nine tens and if you took a ten away then you put that in the ones place it's going to become ten and now we're ready to subtract so we are left with 10 minus 5 is 5 9 minus 3 is 6 4 minus 2 is 2 so the change how much change just traversée sharra sieve what would be 265 265 cents if we were to write if we wanted to write this in terms of dollars we already know that there are a hundred cents per dollar so this you could be viewed as 2 so you could view this as 200 cents plus 65 cents and 200 cents well this is two groups of a hundred cents or two dollars so this right over here is two dollars and sixty-five cents or you could view this because 65 cents is really 65 hundredths of a dollar you could view this as two dollars 2.2 and 65 hundredths of a dollar or two dollars and sixty-five cents so that's how much change Charles should receive