Question

calculate.
$(1.13 \times 10^5) + (6.8 \times 10^4)$
write your answer in scientific notation.

Explanation:

Step1: Rewrite to same exponent

$1.13 \times 10^5 = 11.3 \times 10^4$

Step2: Add the coefficients

$11.3 \times 10^4 + 6.8 \times 10^4 = (11.3 + 6.8) \times 10^4 = 18.1 \times 10^4$

Step3: Convert to proper scientific notation

$18.1 \times 10^4 = 1.81 \times 10^5$

Answer:

$1.81 \times 10^5$