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Math Help - Brain freeze

  1. #1
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    Brain freeze

    I just learn this about a month ago and now I am having a brain freeze.
    Can someone please refresh my mind.



    What is the sum of 7 and 4?
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Patience View Post
    I just learn this about a month ago and now I am having a brain freeze.
    Can someone please refresh my mind.



    What is the sum of 7 and 4?
    "sum" means "add"

    so " What is the sum of 7 and 4?" means "what does 7 + 4 =?"

    so the sum of 7 and 4 is 11, since:
    7 + 4 = 11
    Last edited by Jhevon; March 17th 2007 at 02:35 PM.
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    other words you should know:

    "difference" means "subtract"

    example, what is the difference between 8 and 3?
    difference = 8 - 3 = 5


    "product" means "multiply"

    example, what is the product of 4 and 2?

    product = 4*2 = 8


    "percent" means "/100" or "out of 100"

    example, write 15% as a fraction:

    15% = 15/100 = 3/20

    example 2, write 15% as a decimal
    15% = 15/100 = 0.15


    "of" also means "multiply"


    example, what is 15% of 200?

    15% of 200 = 15/100 * 200 = 3/20 * 200 = 30
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