Some Uses of Negative Numbers
Negative numbers help us represent values below a reference point, such as sea level, ground level, or temperature scales. Let’s explore some real-life examples using zero as the reference point and appropriate signs:
1. A Kite and a Submarine
A kite is flying 30 meters above the ground.
A submarine is positioned 10 meters below the sea surface.
Representation:
m for the kite and m for the submarine.
2. A Skyscraper and an Underground Parking
A building stands 400 meters tall.
The underground parking is 15 meters below ground level.
Representation:
m for the building and m for the parking.
3. Temperature Variations
In Mumbai, the temperature is 28°C.
In Ladakh, the temperature drops to -8°C.
Representation:
°C** for Mumbai and °C** for Ladakh.
These examples demonstrate how negative numbers help us describe heights, depths, and temperatures in relation to a fixed reference point like