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Math Help - help

  1. #1
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    help

    use mental math to simplify each expression
    5 dot 7 dot(-2)
    8 dot 4 dot(-10)
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by dianna View Post
    use mental math to simplify each expression
    5 dot 7 dot(-2)
    8 dot 4 dot(-10)
    I don't know about "mental math" but:
    5 dot 7 dot(-2) = 35 dot (-2) = -70

    8 dot 4 dot(-10) = 32 dot (-10) = -320

    -Dan
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