Question

Which numbers can best be used to estimate 3,872 + 5,109?

Choose exactly two answers that are correct.



 
A.
3,000


 
B.
4,000


 
C.
5,000


 
D.
6,000

Answer 1

B. because if you round like you would with a decimal 3,872 becomes 4,000, you rounded up. then 5,109 would also be 4,000 because you round downwards. All because of the numbers after the comma

Answer 2

3872 + 5109

estimate :
3872 rounds to 4000 <==
5109 rounds to 5000 <==