Three examples of when negative numbers are used in daily life are...
1) Measuring weight--Finding out an amount of weight lost over the course of a fitness program
<span>2) Measuring income--Let's say if someone's income had a 20% decrease, then you could say "Mary-Sue's income over the year had an overall of a -20% growth."</span>
3) In golf--below par
4) (This is an extra if you don't like one of the other examples) Sea depth, and temperatures.
Because the formula is something like baseXhight divided by two. and 2 times sixty is 120 so 120/12=10 that divided by 2 is five so the answer is either 5 or 10