Thursday, February 12, 2015

Math POTW #19 - Happy Valentine's Day!


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13 comments:

  1. 12-5=7
    17-5=12

    7+12+5=24, 30-24=6 students that didn't bring the teacher anything.

    If 5 students did both then we subtract that from the total of students who brought the teachers cards or chocolates because they are included (12-5=7, 17-5=12). Then we add all numbers, 7+12+5=24 and 30-24=6 students who didn't bring the teacher anything.

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  2. First I subtracted the amount of students that brought chocolates and cards:
    12 - 5 = 7 17 - 5 = 12
    Then I added all the students who brought gifts:
    7 = 12 = 5 =24
    Finally, I subtracted this from the amount of students in the class:
    30 - 24 = 6
    Therefore, 6 students did not bring the teacher any gifts.

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  3. 12-5=7 17+7=24
    30-24=6

    Since 5 students brought both, I just chose a random number from 12 and 17 (I chose 12) and subtracted it by 5. Then I added 7 & 17 together to get the total of people who brought stuff (24). Then I just did 30-24 and got 6 as my answer.

    At first I did, 12+17+5. But, the number was greater than 30 so I knew that the 5 people had to be part of the 12 and 17

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  4. To solve this problem we first need to subtract the 5 people that gave both from each section (card and chocolate). So:
    12-5=7 and 17-5=12
    Now to add them up 12+7=24 but we are now missing the other 5 people who did give both so they only count as 1 not 2 therefore we can add 5:
    19+5=24
    24 children gave the teacher at least something so 6/30 didn't. Furthermore, 6 people didn't give the teacher a chocolate or a card.

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  5. 12-5 and 17-5= 7 and 12
    7+12=19 and 19+5=24
    30-24=6

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  6. The answer would be 6.
    I know this as in a class of 30 people 17 brought a card, 12 brought chocolates, and 5 did both. Therefore I know that I have to subtract 5 from each of the categories (chocolates and cards).
    17 - 5 = 12; 12 - 5 = 7
    12 + 7 = 19
    19 + 5 = 24
    30 - 24 = 6

    That means that 6 people didn't bring anything for their teacher

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  7. 12-5=7 People who brought chocolate
    17-5=12 People who brought card
    12+17= 19 People who brought one of those
    19 + 5= People who brought both
    30- 24= 6 People who didn't bring anything

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  8. 17-5=12
    12-5=7
    12+7+5=24
    30-24=6 students who are rude enough not to bring anything for the teacher, SHAME.

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  9. Good job everyone! It was in fact 6 students who did not bring anything for their poor old, old, old teacher.
    (30 - 7 - 12 - 5 = 6)

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  10. 30-7-5-12=6
    six students didn't give anything to the teacher

    ReplyDelete
  11. 17 & 12 are our numbers. 17 -5 = 12 , 12-5 = 7 , +5 = 24. Therefore 30-24 = 6 Students

    ReplyDelete