Convert 4 1/5 to a decimal.

• A. 0.042
• B. 0.42
• C. 4.2
• D. 42

Answer: (C)

When converting a mixed number to a decimal, keep the whole part and turn the fraction into a decimal, then add them. For four and one fifth, the whole part is four. The fraction one fifth equals zero point two because five goes into ten two times. So, four plus zero point two gives four point two. That matches the decimal form of the mixed number exactly: four point two. The other options don’t represent four and one fifth: they place the decimal in the wrong value or omit the whole part entirely.