The ground floor is called Floor 0 because it serves as the reference point between floors above and below. Floors above it have positive numbers, while floors below it have negative numbers.
Class 6 Mathematics Chapter 10 The Other Side of Zero question answer
Class 6 NCERT Ganita Prakash Chapter 10 The Other Side of Zero
The ground floor is labeled as Floor 0 because it represents the starting point or reference level in the building. Floors above it are marked with positive numbers (+1, +2, etc.), while those below are marked with negative numbers (â1, â2, etc.). This numbering system makes navigation clear, as zero divides the building into two sections: floors above and below ground. It also reflects the mathematical concept of zero as the central point on a number line.
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