Problem:
5×104107​=
Answer Choices:
A. .002
B. .2
C. 20
D. 200
E. 2000
Solution:
5×104107​=5×10410×106​=2×102=200.
OR
5×104107​=5103​=51000​=200.
Answer: D​.
The problems on this page are the property of the MAA's American Mathematics Competitions