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.
Do a negative and a positive go together?
When multiplying a positive and positive number together or negative and negative together, keep the same sign. When you multiply a positive and a negative number together,
the result is always negative
. Any number multiplied by zero becomes zero and is neither positive or negative.
What does a positive and a negative make in addition?
Addition of a positive number and a negative number: While adding a positive and a negative number, we take the difference of the absolute values of both the numbers and attach the sign of the greater number with the answer.
a + (-b) = (a – b)
What does a negative and a positive make in science?
The rules for multiplication and division are simple:
If both numbers are positive, the result is positive
. If both numbers are negative, the result is positive. (Basically, the two negative values cancel each other out).
What does a positive minus a positive make?
Rule 1: Subtracting a positive number from a positive number – it’s
just normal subtraction
. For example: this is what you have learned before. 6 – 3 are two positive numbers. So solve this equation the way you always have: 6 – 3 = 3.
What happens if you subtract a negative from a positive?
Subtracting a negative number is the same as adding a positive number — that is, go up on the number line. … When taking a negative number minus a positive number,
drop both minus signs and add the two numbers as if they were both positive
; then attach a minus sign to the result.
Why do 2 minuses make a plus?
This is in fact the reason why the negative numbers were introduced: so that each
positive number would have an additive inverse
. … 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.
Is positive times negative positive?
Rule 2: A negative number
times a positive number equals a negative number
. When you multiply a negative number to a positive number, your answer is a negative number. It doesn’t matter which order the positive and negative numbers are in that you are multiplying, the answer is always a negative number.
What is the rule for adding and subtracting negative numbers?
The rule is: Adding a
negative number is the same as subtracting the corresponding positive number
.
Why negative multiply negative is positive?
Using the fact multiplication is commutative, a
negative times a positive is
also negative. Similarly, we can prove that a negative times a negative is a positive. Since we know that −ab is negative, and the sum of these two terms is 0, therefore (−a) × (−b) is positive.
What is positive or negative?
Positive numbers are written with no sign or a ‘ ‘ sign in front of them and they are counted up from zero to the right on a number line. …
Negative numbers
are always written with a ‘ ‘ sign in front of them and they are counted down from zero to the left on a number line.
What is the rule for multiplying and dividing positive and negative numbers?
With two numbers, the rules for multiplying and dividing positive and negative numbers are not only simple, but they’re also the same for both operations: When
multiplying or dividing two numbers, if the two signs are the same, the result is positive, and if the two signs are different, the result is negative.
What is the rule for dividing positive and negative integers?
RULE 1
: The quotient of a positive integer and a negative integer is negative. RULE 2: The quotient of two positive integers is positive. RULE 3: The quotient of two negative integers is positive. If the signs are different the answer is negative.
What is a negative multiplied by a negative?
When you multiply a negative by a negative you get
a positive
, because the two negative signs are cancelled out.
Is a negative divided by a negative a positive?
Two negatives make a positive, so a negative number divided by
a negative number equals a positive number
. For example, -8 / -2 = 4.
