Which of the following numbers can be added directly in exponential notation?

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Discussion Overview

The discussion revolves around which numbers can be added directly in exponential notation, focusing on specific examples provided by the original poster. The scope includes mathematical reasoning related to the addition of numbers expressed in scientific notation.

Discussion Character

  • Mathematical reasoning

Main Points Raised

  • The original poster lists four numbers in exponential notation and presents multiple choice options for which pairs can be added directly.
  • Some participants express uncertainty about the meaning of "add directly" in the context of the problem.
  • One participant suggests that options 1 and 4 can be added directly because they share the same exponent (-4).
  • Another participant expresses agreement with the suggestion that 1 and 4 can be added directly.

Areas of Agreement / Disagreement

There is no consensus on the correct answer, as participants express differing opinions and uncertainty regarding the interpretation of the problem.

Contextual Notes

Participants do not clarify the specific mathematical principles that govern the addition of numbers in exponential notation, leaving potential assumptions and definitions unresolved.

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Which of the following numbers can be added directly in exponential notation?

1. 3x10^-4

2. 600x10

3. 32.6x10^-3

4. 0.4x10^-4

_______________________________

a. 1 and 2

c. 1 and 4

d. 2 and 4

b. 1and3
 
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So what do you think?
 
chemisttree said:
So what do you think?

a ! 1and2 I am not sure please help :(
 
What do you think is meant by "add directly" in this problem?
 
im not sure what does it really mean but now I am looking at it i think it can be c, 1and4, because both of them have the same exponent (-4) !?
 
And right you are!
 
chemisttree said:
And right you are!

Thank you so much for the help :)
 

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