# WONDER #2327: How Can Negative Numbers Exist?

Question **1** of **3**

## Which of these is NOT a rule for negative numbers?

- Subtracting a larger number from a smaller number will result in a negative number.
- When you multiply two negative numbers, the product is a positive number.
- When you multiply two negative numbers, the product is a negative number.
- When a subtraction sign is next to a negative number, you can change them into an addition sign.

Question **2** of **3**

## What causes a location to have a negative number as an altitude?

- The location is below sea level.
- The temperature there is below freezing year-round.
- The location is above sea level.
- Most people who live there understand negative numbers.

Question **3** of **3**

## According to this Wonder, mathematicians in _______________ rejected negative numbers for ages.

- China
- India
- Russia
- Europe

Check your answers online at https://wonderopolis.org/wonder/how-can-negative-numbers-exist.