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.Similarly, it is asked, what is a negative plus a positive?
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.
Likewise, why does subtracting a negative number make it positive? If you add a cold cube (add a negative number), the temperature goes down. If you remove a hot cube (subtract a positive number), the temperature goes down. And if you remove a cold cube (subtract a negative number), the temperature goes UP! That is, subtracting a negative is the same as adding a positive.
Beside above, what is the rule for adding and subtracting negative numbers?
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 adding 2 negatives equal a positive?
When you have two negative signs, one turns over, and they add together to make a positive. If you have a positive and a negative, there is one dash left over, and the answer is negative.
How do you divide by a negative number?
When you divide a negative number by a positive number then the quotient is negative. When you divide a positive number by a negative number then the quotient is also negative. When you divide two negative numbers then the quotient is positive.Why do two negatives make a positive?
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.Why do two negatives equal a positive?
When you multiply a negative by a negative you get a positive, because the two negative signs are cancelled out.What's a negative plus positive?
Rule 3: Adding negative numbers to positive numbers—count backwards, as if you were subtracting. Example 3: Let's say we had the problem: 5 + (-2). This would be read as “five plus negative two.” This can also be thought of on a number line.What is positive and negative called?
Positive and negative numbers are all integers. Integers are whole numbers that are either greater than zero (positive) or less than zero (negative). For every positive integer, there's a negative integer, called an additive inverse, that is an equal distance from zero.What are the rules for adding and subtracting integers?
To add integers having the same sign, keep the same sign and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.What are the four rules of maths?
The Four Basic Mathematical Operations. The four basic mathematical operations--addition, subtraction, multiplication, and division--have application even in the most advanced mathematical theories.What is a negative divided by a negative?
Rule 3: A negative number divided by a negative number gives you a positive number. Example 3: This is also new—and doesn't seem to make much sense, but it is a rule we have to follow when dividing negative numbers. 
