anonymous
  • anonymous
think about the mathematical process you use as you solve the following problems. show your work. a. If there are 100 students in a room and 40 of them are boys, how many are girls? b. if there are 17 blue and white stripes on the flag and 9 of them are blue, how many are white? c. if there are 250 pennies and dimes in a box and 130 of them are pennies, How many are dimes? d. now it is time to generalize. Imagine you know how many items you have in a collection of two types of things. If you know how many of one of the items you have,How could you find how many of the other item you have?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Um can you help me?
Vocaloid
  • Vocaloid
well, let's go one by one: a. If there are 100 students in a room and 40 of them are boys, how many are girls?
anonymous
  • anonymous
60 ^w^?

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Vocaloid
  • Vocaloid
right, and we got that by subtracting 100-40, correct?
anonymous
  • anonymous
Yes.
Vocaloid
  • Vocaloid
now let's move to the next question: b. if there are 17 blue and white stripes on the flag and 9 of them are blue, how many are white?
Vocaloid
  • Vocaloid
hint: 17 = blue + white
anonymous
  • anonymous
8?
Vocaloid
  • Vocaloid
right
Vocaloid
  • Vocaloid
c. if there are 250 pennies and dimes in a box and 130 of them are pennies, How many are dimes?
anonymous
  • anonymous
^-^ ok um so 120.. for c?
Vocaloid
  • Vocaloid
right! now, I'm sure you've noticed the pattern in these problems. question d is asking you about that pattern. d. now it is time to generalize. Imagine you know how many items you have in a collection of two types of things. If you know how many of one of the items you have,How could you find how many of the other item you have?
Vocaloid
  • Vocaloid
if you know the total, and you know how many of one type you have, then to find the other type, you subtract total - first type = second type
Vocaloid
  • Vocaloid
that should be a sufficient answer for d)
anonymous
  • anonymous
Thank you. C: sorry I'm a slow person ._.
Vocaloid
  • Vocaloid
nah, no need to apologize, you actually caught on pretty quickly
anonymous
  • anonymous
:3 ty
anonymous
  • anonymous
@Vocaloid Um can you help me with another question in a few minutes...I'll open a new post. c:
Vocaloid
  • Vocaloid
sure

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