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Current time:0:00Total duration:3:45

Interpreting picture graphs: notebook

CCSS.Math:

Video transcript

Maria has 70 pages in her notebook she made a graph of the kinds of writing on all the pages she has used so far how many pages are left in Maria's notebook so down here we have a picture graph or pictograph showing all the pages Maria's used so far in her notebook but we're asked how many pages are left in Maria's notebook so to find that out we need to know how many she started with which it tells us right here her notebooks started with 70 pages and then if we take away the ones she's used so far if we take away however many pages she's used so far that will tell us how many are left in her notebook so the question here is how many has she used so far well we don't know exactly but we have this picture graph that will help us find that answer so super important on the picture graph first is right here and tells us that each of these pieces of paper represents two pages in Maria's notebook so four poems she wrote on two pages and another two pages or she wrote on a total of four pages about poems she did reports on two four six eight ten pages she wrote stories for a lot of stories she wrote stories on two four six eight ten twelve fourteen pages of stories she wrote letters on two four six eight pages and finally she journaled on two four six eight ten twelve pages so this here this is the total pages she's used so far if we combine all of these the four four poems and ten four reports and so on this will tell us how many pages she's used so far then we can substitute that in right here and we can say 70 she started with take away what she used so far and we'll get our final solution for the pages left in her notebook so let's find this total there's four pages four poems plus ten pages four reports 14 on stories eat more pages to write letters and 12 pages to journal so if we add these I'll start with the ones two ones plus eight ones is ten ones ten ones plus four ones is 14 plus zero more is still 14 ones plus 4 more is 18 ones plus now let's add our tens 110 plus another 10 is two tens or 20 plus one more 10 is 3 tens or 30 so she's 18 once was 310 so 18 plus 30 pages which is a total of 48 pages she's used 48 pages so far so if we take those 48 away from 70 we'll know how many pages are left one way we could do this is we could think of it as counting up we could say there's 48 pages used let's count up to 70 to see how many more pages are still are in the notebook if we count up from 48 to 50 that's two more pages she has and then from 50 to 70 is 20 that's 20 more pages she has so she has a total of 22 more pages left in her notebook