Table of Contents
- 1 What is a negative plus a negative equal?
- 2 How do you add two negative numbers?
- 3 Why is a minus plus a minus a plus?
- 4 What’s the rule for plus and minus?
- 5 When does a negative number equal a positive number?
- 6 Why do two negatives make a positive when adding?
- 7 What happens when two negative numbers are multiplied?
What is a negative plus a negative equal?
When you are adding a negative number to a negative number, it becomes subtraction, where you start from a negative point on the numbers line and move left. This reads “negative three plus negative 2”. You need to ignore the plus sign and recognize that the second negative means you are subtracting that number.
How do you add two negative numbers?
Adding two negative numbers together? Just add the absolute value of each number together, put a negative sign in front, and you have your answer!
What is the rule for adding positive and negative numbers?
Addition and Subtraction of Positive and Negative Numbers Adding positive and negative numbers is simple when both numbers have the same sign. Simply find the sum of the numbers and keep the sign. For example: 3 + 2 = 5.
Why is a minus plus a minus a plus?
The fact that the product of two negatives is a positive is therefore related to the fact that the inverse of the inverse of a positive number is that positive number back again. Even in such general, non-numerical contexts, the property that the product of two negative things is positive still holds.
What’s the rule for plus and minus?
The Rules:
| Rule | Example | |
|---|---|---|
| +(+) | Two like signs become a positive sign | 3+(+2) = 3 + 2 = 5 |
| −(−) | 6−(−3) = 6 + 3 = 9 | |
| +(−) | Two unlike signs become a negative sign | 7+(−2) = 7 − 2 = 5 |
| −(+) | 8−(+2) = 8 − 2 = 6 |
Does a plus and a plus make a minus?
Addition and Subtraction Two ‘pluses’ make a plus, two ‘minuses’ make a plus. A plus and a minus make a minus.
When does a negative number equal a positive number?
Multiplication and Division If two negative numbers are multiplied together or divided, the answer is positive. If a positive and a negative number are multiplied or divided, the answer is negative. Is a negative minus a positive a positive? Subtracting a number is the same as adding its opposite.
Why do two negatives make a positive when adding?
Each number has an “additive inverse” associated to it (a sort of “opposite” number), which when added to the original number gives zero. The fact that the product of two negatives is a positive is therefore related to the fact that the inverse of the inverse of a positive number is that positive number back again.
When do Plus and minuses make a positive number?
A plus and a minus make a minus. If two positive numbers are multiplied together or divided, the answer is positive. If two negative numbers are multiplied together or divided, the answer is positive. If a positive and a negative number are multiplied or divided, the answer is negative.
What happens when two negative numbers are multiplied?
If two negative numbers are multiplied together or divided, the answer is positive. If a positive and a negative number are multiplied or divided, the answer is negative. Click to see full answer Simply so, what is a negative plus a negative?