Scientific Word Problems involving Multiplication and Division NOTES
1. The area of land that Rhode Island covers is approximately 1.5 x 10 3 square miles. The area
of land that Alaska covers is 6.45 x 10 5 square miles. About how many more times larger is
Alaska than Rhode Island?
2. An ant is 3.5 x 10-3 m long. What is the length of two of these ants, placed end to end?
a.) 3.5 x 10-6 m
b.) 1.75 x 10-3 m
c.) 7 x 10-3 m
d.) 7 x 10-6 m
3. The population of a country in 1950 was 6.2 x 10 7. The population of this country in 2030 is
projected to be 300 times larger than it was in 1950. If this projection is correct, what will
the population of this country be in 2030?
4. The world population in 2025 may reach 7.5 x 109 people. This is about triple what the world
population was in 1950.
a. PART A: What was the world population in 1950, expressed in scientific notation?
b. PART B: What was the world population in 1950, expressed in billions of people?