When adding or subtracting with scientific notation, why is it important to have the same power of 10?

Because we perform something like common factor, so this guarantee that corresponding digits have regarding coefficients have the same place value. Remember that a number written in scientific notation is given by the product of a number between 1 and 10 and another number that is power of 10. For example, let's write two examples about this:

Addition:

Addition:

Subtraction:

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

666666666666666666666

6

6

6

6

6

6

6

66

6

6

6

66

6

66answer:

step-by-step explanation: