Table of Contents
- Use of Plus and Minus Sign
- Summary
- What’s Next?
In the previous segment, we learn about the Order of integers on the number line. In this segment, we will look at a few examples to understand how the signs of integers are used.
Examples of uses of plus and minus sign
The signs of integers, that is the plus and minus sign convey a precise meaning when used in certain situations.
Let us understand this with the following examples:
Q. Amir received ₹ 500 as pocket money, of which he spent ₹ 200. What signs
would indicate the money he received and spent?
Solution:
Amir has received the money. This means he has more money now than he had earlier. Since it is an increase, it will be denoted with a plus sign, that is +500.
Spending ₹ 200 has reduced Amir’s pocket money by ₹ 200. Since it is a decrease it will be
denoted with a minus sign, that is -200.
Q. Rahul and Bianca started a new business. What sign would we use to show a
loss of ₹ 10,000 and a profit of ₹ 10,000?
Solution:
Since loss means ‘to lose’, if Rahul and Bianca’s business made a loss, it would be shown as
-10,000.
Profit means ‘to gain’, so if they made a profit it would be shown as +10,000.
Summary
Signs of Integers |
If any situation can be denoted by a number with a ‘plus sign’ or a ‘minus sign’, then its opposite situation can be represented by changing the sign of the number |