Question

Ellen read the following question.
If a mockingbird chick eats about
42 meals each day, about how many
meals will it eat in a month?
Ellen used multiples of 10 and estimated
the answer to be about 1200.
Which estimation strategy did Ellen use?
A. Round 42 down and multiply by 10.
B. Round 42 down and multiply by 30.
C. Round 42 up and multiply by 30.
D. Round 42 up and multiply by 10.

Answer 1

b

Answer 2

B. Round 42 down and multiply by 30
42 rounded down is 40, and there are 30(or 31) days in a month, but in this question, I assume it to be 30 for easier calculation.
40*30 = 1200 <-- what Ellen got