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CCSS.Math:

Leeman squeeze three lemons to make lemonade she squeezed 42 millilitres of lemon juice from the first lemon 36 milliliters of juice from the second lemon and 45 milliliters of juice from the third lemon how much lemon juice did Lehman squeeze from her three lemons but we just have to add how many milliliters she got from each of them add them all together so from the first one she got 42 milliliters forty-two and four short four milliliters I could write lowercase M form Italy for Milli and then uppercase L for leaders 42 milliliters from the first lemon 36 milliliters from the second lemon 36 milliliters and then 45 milliliters from the third lemon 45 milliliters so we can just add these three quantities together so let's do that let's add them together so we're going to get something in terms of milliliters so let's go first to the ones place 2 plus 6 is 8 8 plus 5 is 13 13 is three ones and one 10 so I could write that one 10 in the tenths place so 1 plus 4 is 5 plus 3 is 8 plus 4 is 12 this is going to be 12 tens which is the same thing as 120 so in total Lehman squeezed 123 milliliters from her 3 lemons let's do another problem like this Sarah poured five cans of motor oil into the container below so this container below has 55 let's see this is halfway it's filled up after she poured the flat the five cans and it's filled up halfway between 40 and 50 so this mark right here this looks like that would be 45 so it's filled up to 45 milliliters so she poured 5 cans and those five cans combined ended up being 45 milliliters all of the cans held the same amount of oil and I guess we can assume that the can that this that this that this that this container below was empty before she filled any of the cans in so all the cans held the same amount of oil how many milliliters of motor oil were in each can so she had five cans so one one can two cans three cans four cans and five cans they each had a certain amount of oil in them they each had a certain amount of oil in them and when she put them all in so let's say they each have a question mark of oil in them so she had five cans and they each had a question mark amounts a question mark milliliters of oil in it and when you multiply it by five when you put all five together you got 45 milliliters you've got 45 milliliters so five times what amount of oil per can would get us to 45 in total well 5 times 9 is 45 so this thing right over here 5 times 5 times 9 is 45 so Sarah Sarah had nine milliliters in each can they each had the same amount they say that all of the cans held the same amount of oil so if you had nine milliliters in each one notice in each if in each of the five cans you had nine milliliters five times nine is forty-five so she had 49 milliliters of motor oil in each can