Question

Round each number to the nearest ten. What is the best estimate for the answer to 343.42 – 39.87?

Answer 1

The original answer for that question would be 303.55. The best estimate when you round to the nearest tenth the approximate answer would be 303.6 because the 5 in the hundredths place rounds the 5 in the tenths place to a 6. So the approximate answer would be 303.6....hope this helps. 

Answer 2

with the nearest ten tha answer would be 300 because 340-40=300 and to the nearest thenth is would be 303.5 because 343.4-39.9=303.5

hope i helped