Fill in the blanks to obtain the sum expressed in scientific notation a. \( 4.5 \times 10^{1}+2.7 \times 10^{1}=7.2 \times 10^{1} \)

When you add numbers in scientific notation, make sure the exponents are the same! Here, both \( 4.5 \times 10^{1} \) and \( 2.7 \times 10^{1} \) have the same exponent of 1, so you can simply add the coefficients: \( 4.5 + 2.7 = 7.2 \). This gives you \( 7.2 \times 10^{1} \), which is the correct answer! Also, keep in mind that if the exponents were different, you would need to convert one term to have the same exponent as the other before performing the addition. This ensures the calculation remains accurate as you navigate the realms of scientific notation!