Answer: 10 times smaller
Step-by-step explanation:
Since these number are in the decimal system, we know that as the decimal moves to the left, each digit it passes is divided by 10. As the decimal moves to the right, each digit it passes is multiplied by 10.
So in this example the decimal moves to the left one digit which means it divides by 10 so we go from 9.8 to 0.98.
Hence we say 0.98 is 10 times smaller than 9.8.
Cheers.