Arithmetic Grade Four

Lesson One hundred and fifty-three: Pictographs


If you want to know what the most popular flavor of ice cream is for some group of people you might ask them one by one and keep a tally of their answers. Each time you get a response, you would mark down that response on your tally sheet. You might set up your tally sheet and record the responses like this:

FLAVORTALLYTOTAL
vanilla 12
chocolate 9
strawberry 17
chocolate chip 8
triple chocolate chip 28
From this tally we can see that the favorite flavor of ice cream was triple chocolate chip and the least popular flavor was chocolate chip. We can also answer question such as the following:

  1) How many more people picked strawberry as their favorite than chocolate?
     ANSWER: 17 - 9 = 8

  2) How many more people picked triple chocolate than vanilla?
     ANSWER: 28 - 12 = 16

  3) How many people in all selected vanilla, strawberry, or chocolate?
     ANSWER: 12 + 17 + 9 = 38


Let's say you want to know what the favorite colors for all the people you know are. You could keep track of this using a tally.

COLORTALLYTOTAL
blue 21
red 12
yellow 14
purple 18
orange 16
From this tally we can see that blue was the most popular color and that red was the least popular color. We could also ask questions about our tally such as the following questions:

  1) How many more people picked blue as their favorite than purple?
     ANSWER: 21 - 18 = 3

  2) How many more people picked orange than red?
     ANSWER: 16 - 12 = 4

  3) How many people in all selected red, yellow, or orange?
     ANSWER: 12 + 14 + 16 = 42


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