Question: The area of Europe is about 9.938 × 10^6 square kilometers, and the area of North America is about 2.4256 × 10^7 square kilometers. What is the approximate total area, in square kilometers, of Europe and North America combined?
A) 3.4194 × 10^6
B) 3.4194 × 10^7
C) 1.23636 × 10^6
D) 1.23636 × 10^7
Correct answer: B
Grade: 8 | Topic: Expressions and Equations | Difficulty: Medium | Standard: 8.EE.A.4