170/425 = 40%
A value like 170/425, or 40%, can show up in everyday life when 170 out of 425 people choose a certain option in a survey. It could also describe a store discount, the portion of a class that completed an assignment, or the amount of a battery that has been used.
To picture 40% quickly, imagine four out of every ten items, or slightly less than half of a group. On a 100-square grid, it would cover 40 squares, leaving 60 squares uncovered.
A common mistake is thinking 40% is close to half because both describe a fairly large portion. However, 40% is 10 percentage points below 50%, so it represents noticeably less than one-half.
