Question

Subtract. Write your answer in scientific
(2 x 105) - (8.3 x 10³)

Answer 1

To subtract numbers written in scientific notation, rewrite both numbers with the same exponent, and then subtract the coefficients.

Step-by-step explanation:

To subtract numbers written in scientific notation, you need to make sure the exponents are the same. In this case, you have (2 x 105) - (8.3 x 103). Since the exponents are not the same, you can rewrite 8.3 x 103 as 8.3 x 105 x 10-2. Now you can subtract the two numbers: (2 x 105) - (8.3 x 105 x 10-2) = 2 x 105 - 8.3 x 105 x 10-2 = (2 - 8.3 x 10-2) x 105.

Simplifying further, (2 - 8.3 x 10-2) x 105 = (2 - 0.083) x 105 = 1.917 x 105.

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