Need help I will give brainlisted and 70 points for the correct answer!

Answer:
#1 is 3.5 x 10^-1
#2 is 3.1 x 10^6
#3 is 5.3 x 10^-6
#4 is 4.2 x 10^-1
Step-by-step explanation:
You just need to multiply/divide the decimals, didn't even need the exponents