If the signs are different, the answer is always negative.Įxample: -25 ÷ 5 = -5 Thus, these are the rules to add, subtract, multiply and divide positive and negative numbers. If the signs are the same, the answer is always positive. (-) - (+) = Change the sign of the number to be subtracted and add them up.(+) - (-) = Change the sign of the number to be subtracted and add them up.(-) - (-) = Change the sign of the number to be subtracted and add them up.The result takes the sign of the greater number.The result takes the sign of the greater number. (+) - (+) = Change the sign of the number to be subtracted and add them up.To subtract a number from another number, the sign of the number (which is to be subtracted) should be changed and then this number with the changed sign should be added to the first number. (‐) + (+) = Subtract the numbers and take the sign of the bigger number.(+) + (‐) = Subtract the numbers and take the sign of the bigger number.If the signs are different, subtract the numbers and use the sign of the larger number. (‐) + (‐) = Add the numbers and the answer is negative.(+) + (+) = Add the numbers and the answer is positive.you will see that positive, zero or negative exponents are really part of the same (fairly simple) pattern: Example: Powers of 5. If the signs are the same, add and keep the same sign. That last example showed an easier way to handle negative exponents: Calculate the positive exponent (a n) Then take the Reciprocal (i.e. The following content shows the rules for adding, subtracting, multiplying, and dividing positive and negative numbers. The four basic arithmetic operations associated with integers are:Īnswer: There are some rules for adding, subtracting, multiplying, and dividing positive and negative numbers.īefore we start learning these methods of integer operations, we need to remember a few things. If there is no sign in front of a number, it means that the number is positive. Scott at also has put together a handy video on how to create a cheat sheet for multiplying negative and positive numbers (scroll down the page and you’ll find the video).Question: List down the rules for adding, subtracting, multiplying and dividing positive and negative numbers. If you’re still confused over why a negative number times a negative number makes a positive number, Diana Brown at the Department of Mathematics, the University of Georgia, explains it in many different ways in this article. Here’s the overall rule to remember when multiplying positive and negative numbers: 2 x -4 are both negative, so we know the answer is going to be positive. If you look at it on the number line, walking backwards while facing in the negative direction, you move in the positive direction.įor example. Two negatives make a positive, so a negative number times a negative number makes a positive number. Rule 3: A negative number times a negative number, equals a positive 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.įor example: -2 x 4, which in essence is the same as -2 + (-2) + (-2) + (-2)Īnd as we said, if it’s the other way around 4 x -2, the answer is still the same: -8. When you multiply a negative number to a positive number, your answer is a negative number. Rule 2: A negative number times a positive number equals a negative number. 5 is a positive number, 3 is a positive number and multiplying equals a positive number: 15. Other examples of adding together two negative numbers could be: -9 + -10 -19. For example, adding -2 to -5 would equal -7. This is the multiplication you have been doing all along, positive numbers times positive numbers equal positive numbers.įor example, 5 x 3 = 15. The rules for negative numbers are as follows: The addition of two negative numbers is similar to two positive numbers, where it will add up to a more negative number. There are only three rules to remember: Rule 1: A positive number times a positive number equals a positive number. There are less rules when multiplying positive and negative numbers than in adding and subtracting positive and negative numbers.
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