anonymous
  • anonymous
What is the estimated value of the expression if each number in the expression is rounded to the nearest whole unit? (4.18)(1.93)(8.72)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@whpalmer4 Umm i got 0
AlexandervonHumboldt2
  • AlexandervonHumboldt2
use the calculator to do this. Or there is not permited to use it? your answer is not correct if the sing between the ( ) is multiplication
anonymous
  • anonymous
ty

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More answers

whpalmer4
  • whpalmer4
okay, if we round to the nearest whole unit, what are the rounded off values of 4.18, 1.93 and 8.72?
anonymous
  • anonymous
hmm
whpalmer4
  • whpalmer4
"nearest whole unit" means "nearest counting number"
whpalmer4
  • whpalmer4
"unit" <--> "1" in this context
anonymous
  • anonymous
Okay....let me think. Btw this is my worst topic ever
whpalmer4
  • whpalmer4
Have no fear, I'm here :-)
anonymous
  • anonymous
Okay :3 well........
whpalmer4
  • whpalmer4
4.18 - is that closer to 4, or 5?
anonymous
  • anonymous
4
whpalmer4
  • whpalmer4
very good. if we use my method from previous problem, we are rounding to the 1's place, so we add 0.5 4.18 +0.5 ----- 4.68 drop everything after the place where we are rounding 4 our first number is (4) how about the next two?
anonymous
  • anonymous
lol
anonymous
  • anonymous
this not the place for this
anonymous
  • anonymous
like u said;
anonymous
  • anonymous
There....now where were we?
whpalmer4
  • whpalmer4
Okay, so we had "simplified" our expression from \[(4.18)(1.93)(8.72)\] to \[(4)(1.93)(8.72)\] but we still need to round the second two numbers before multiplying to get our estimate
anonymous
  • anonymous
Okay
whpalmer4
  • whpalmer4
what is the nearest counting number to 1.93?
anonymous
  • anonymous
2?
whpalmer4
  • whpalmer4
as an old math teacher of mine used to say when someone answered without conviction in their voice, "is that an answer, or a prayer?" :-)
anonymous
  • anonymous
Lol X'D 2
whpalmer4
  • whpalmer4
that's better! How about the third one?
anonymous
  • anonymous
9
whpalmer4
  • whpalmer4
correctamundo. so now we have which 3 numbers to multiply together?
anonymous
  • anonymous
uh 4*2*9
anonymous
  • anonymous
:_:
whpalmer4
  • whpalmer4
which equals...
anonymous
  • anonymous
=72
whpalmer4
  • whpalmer4
excellent! if we'd done the problem as originally stated, we would have 70.347728 so our estimate is pretty good, and a lot less work!
anonymous
  • anonymous
Thank you (:
whpalmer4
  • whpalmer4
you're welcome, of course
anonymous
  • anonymous
So it would be 70.347728 or do with take off some numbers?
anonymous
  • anonymous
70.34 O.O
whpalmer4
  • whpalmer4
No, the answer is 72. I'm just telling you what we would have gotten if we hadn't done an estimate, but instead multiplied the 3 original numbers in all of their magnificence :-)

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