Question

B. In each of the following, use a signed number to represent the situations opposite to the given one.

1. -20cm represents moving 20 cm to the left.
2. +4 seconds represents 4 seconds after the launch of a rocket.
3. +1,000 pesos represents an increase of 1,000 pesos in one's month salary.
4. -2 kg represents a decrease of 2 kg in body weight.

Answer 1

1. +20cm represents moving 20 cm to the right.
2. -4 seconds represents 4 seconds before the launch of a rocket.
3. -1,000 pesos represents a decrease of 1,000 pesos in one's monthly salary.
4. +2 kg represents an increase of 2 kg in body weight.