Answer:
a. 830.380
Explanation:
3 ×
is
. This is the same as .3 when it's written in decimal form.
The first place on the right side of the decimal is the 'tenths' place. The second spot on the right side of the decimal is the 'hundredths' place.
Like this:
hundreds tens ones . tenths hundredths thousandths
All of the answers have the 830 in them. The only difference between the answers is the .380, .308, .038, .083. Once you see you have 3/10 (which is said three-tenths, which is .3) you can eliminate the last two answers, c and d. Then check the hundredths place. You have 8/100 (which is said eight-hundredths, which is .08) then you can eliminate b and find your answer, a.