more than indicates a difference, so subtract.
3.12-1.27 = 1.85
you should have noticed that your answer was not one of the choices, so maybe some rethinking was in order.
If I ask how much bigger 10 is than 6, would you add 10+6?
a) 1.85 x 108
b) 1.85 x 1016
c) 1.85 x 1064
3.12 x 108 + 1.27 x 108
Do have to multiply, add, subtract, or divide??? I pick to add.
3.12 x 108 + 1.27 x 108
right?
3.12-1.27 = 1.85
you should have noticed that your answer was not one of the choices, so maybe some rethinking was in order.
If I ask how much bigger 10 is than 6, would you add 10+6?
3.12 x 10^8 + 1.27 x 10^8
When you add these two numbers, you get:
4.39 x 10^8
So, the population of the United States was about 4.39 x 10^8, which is approximately 439 million. Therefore, the correct answer is:
a) 1.85 x 10^8.
So, the calculation is:
3.12 x 10^8 + 1.27 x 10^8
To add the numbers, you can simply add the coefficients (3.12 + 1.27) and keep the same exponent (10^8). Therefore, the population of the United States was:
4.39 x 10^8
This means that the population of the United States was 439 million more than Japan.
From the available options, the closest answer is:
a) 1.85 x 10^8
Although it's not an exact match, it is the closest option to the calculated result.