Question

Estimate using compatible numbers.
49% of 609

Answer 1

not sure what is meant by compatible numbers, but perhaps this?

49% is almost 50%
609 is almost 610

50% is (1/2)

(1/2) of 610 is ?

Answer 2

305

Answer 3

or 300 if you wanted to round the 609 to 600 instead of 610

Answer 4

which might make more sense if you are rounding the percentage up.