It means make an estimate that is too large.
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If you rounded up, it's an overestimate, if you rounded down, it's an underestimate. If you did both, whatever you did more of will prevail.
Communitive means of, or belonging to, a community. It has no meaning in math. Communative does not mean anything - in math or elsewhere.
what does 10y mean in math as in is it the quotient or the product?
It means to estimate something as more than its real value.
The definition for the term overestimate is to assign too high a value to something.
Don't overestimate yourself!
overestimate
You Overestimate when the problem has over 3 digits.
Most people would estimate that as 6 (an overestimate) - 4 (an underestimate) which would estimate the answer as 2, which is an overestimate.
The definition for the term overestimate is to assign too high a value to something.
Advantages and disadvantages of overestimate and underestimate
To estimate too highly; to overvalue., An estimate that is too high; as, an overestimate of the vote.
If you have rounded up, it will be an overestimate. If you have rounded down, it will be an underestimate.
overestimate
It's an overestimate. The actual total is 1.61