Estimating Sums of Single Digit Numbers
Which of the following represents the most accurate estimation of 4 + 8? is the answer 5, 10, 20 or 25

Question

myininaya · Answer

this is a weird question. 4+8=12 the closest number to 12 here is 10

nowhereman · Answer

Calculate the exact result and the absolute distance to the estimates. The one with the smallest distance is the best estimate.

nowhereman · Answer

Weirdness depends on the point of view. Also most well-defined things are trivial.

myininaya · Answer

yes and it is my point view only that the question is weird lol

nowhereman · Answer

:-D

anonymous · Answer

I would think that 4 rounded is 10 and 8 rounded is 10 so 20 would be correct

myininaya · Answer

i guess we can view it as a sort of practice before learning epsilon  delta proofs

myininaya · Answer

the closest number to 12 is 10 here

anonymous · Answer

yes

nowhereman · Answer

why would you take estimates before adding?

anonymous · Answer

what is the rule for estimating sums?