Use front-end estimation to add 395 + 450 + 275. Indicate the three digits that you will add first.
Select three correct answers.
A. 2
B. 9
C. 3
D. 4
E. 7
F. 5
To find the estimation, you need to round the digits.
395 rounded is 400
450 rounded is 500
275 rounded is 300
3, 4, 5 are the answers.
You are very welcome!
:P