Question

4.55 • 10^13 - 1.78 • 10^12

Answer 1

4372 is the correct answer

Answer 2

4.55 · $10^{13}$ - 1.78 · $10^{12}$

First let's make $10^{13}$ the same as $10^{12}$. We can do this by multiplying 4.55 x 10, and dividing $10^{13}$ by 10.

Now we have: 

45.5 · $10^{12}$ - 1.78 · $10^{12}$

Now let's subtract 1.78 from 45.5

45.5 - 1.78 = 43.72

Now we have: 

43.72 · $10^{12}$

But, since the 43.72 has to be in between 1 and 10, we have to divide 43.72 by 100, and multiply $10^{12}$ by 100.

The answer is:

4.372 · $10^{13}$

Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)