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anonymous

  • one year ago

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?

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  1. anonymous
    • one year ago
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    Um can you help me?

  2. Vocaloid
    • one year ago
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    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?

  3. anonymous
    • one year ago
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    60 ^w^?

  4. Vocaloid
    • one year ago
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    right, and we got that by subtracting 100-40, correct?

  5. anonymous
    • one year ago
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    Yes.

  6. Vocaloid
    • one year ago
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    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?

  7. Vocaloid
    • one year ago
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    hint: 17 = blue + white

  8. anonymous
    • one year ago
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    8?

  9. Vocaloid
    • one year ago
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    right

  10. Vocaloid
    • one year ago
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    c. if there are 250 pennies and dimes in a box and 130 of them are pennies, How many are dimes?

  11. anonymous
    • one year ago
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    ^-^ ok um so 120.. for c?

  12. Vocaloid
    • one year ago
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    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?

  13. Vocaloid
    • one year ago
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    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

  14. Vocaloid
    • one year ago
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    that should be a sufficient answer for d)

  15. anonymous
    • one year ago
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    Thank you. C: sorry I'm a slow person ._.

  16. Vocaloid
    • one year ago
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    nah, no need to apologize, you actually caught on pretty quickly

  17. anonymous
    • one year ago
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    :3 ty

  18. anonymous
    • one year ago
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    @Vocaloid Um can you help me with another question in a few minutes...I'll open a new post. c:

  19. Vocaloid
    • one year ago
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    sure

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