Question

If we denote the height of a place above sea level by a positive integer and depth below the sea level by a negative integer, write the following using integers with the appropriate signs: 

(a) 200 m above sea level 

(b) 100 m below sea level 

(c) 10 m above sea level 

(d) sea level

Answer 1

(a) +200 

(b) –100 

(c) +10 

(d) 0