Why do 2 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.
What does a negative plus a positive make?
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 equal?
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.
Why negative and negative is positive?
Explanation: We know that negative times anything means that it will change the sign. Ideally, the second negative should change the sign of our original number (which is also negative). So, our original negative sign is changed into a positive sign when a negative is multiplied to it.
Does 2 negatives in a fraction make a positive?
Yes. If either the Numerator OR the Denominator but NOT BOTH of them is negative then the fraction IS negative, on the other hand if BOTH are negative then the fraction is POSITIVE!
What does a negative and a negative make?
Why a negative times a negative is a positive (video) | Khan Academy.
What does a positive plus a positive equal?
ADDITION/ SUBTRACTION: ):( Positive number plus a positive number, add the two numbers, and it equals a positive number.
How do you add a positive and a negative?
Adding Positive and Negative Numbers
- Rule 1: Adding positive numbers to positive numbers—it’s just normal addition.
- Rule 2: Adding positive numbers to negative numbers—count forward the amount you’re adding.
- Rule 3: Adding negative numbers to positive numbers—count backwards, as if you were subtracting.
What does a plus and a plus make?
Adding and multiplying combinations of positive and negative numbers can cause confusion and so care must be taken. Two ‘pluses’ make a plus, two ‘minuses’ make a plus. A plus and a minus make a minus.
What is negative divided by positive?
If the two signs are different, the answer is negative. So, if we are dividing a negative by a positive, the answer will be negative.