Question

Add 3 x 10^9 +5.3 x 10^10

Answer 1

Add 3 x 10^9 +5.3 x 10^10

   3 x 10^9
 +5.3 x 10^10
------------------
5.6 x 10^10

Answer 2

Answer:

3*10⁹ + 5.3*10¹⁰ = 5.6*10¹⁰

Explanation:

The values are given as exponents:

3*10⁹ and 5.3*10¹⁰

As per the rules:

-Before adding two numbers, all exponents must be the same

-The addition takes place between the numerical portion of the numbers

- The final value is rounded off to the least places in the decimal portion of the given numbers

Therefore, the two numbers to be added are:

$3*10^{9}+53*10^{9}=56*10^{9}$

Rounded off the final value to 1 decimal place gives:

5.6*10¹⁰