A negative plus a positive equals addition11/23/2023 ![]() You need to ignore the plus sign and recognize that the second negative means you are subtracting that number. Explore the concept of order of operations, emphasizing the importance of parentheses in mathematical expressions. This reads “negative three plus negative 2”. 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.įor example, -3 + (-2). Rule 4: Adding negative numbers to negative numbers- treat the problem like subtraction (counting backwards). How does that look on the numbers line?Īnd then you add the negative number, which means you are moving to the left – in the negative direction. When you are adding a negative number to a positive number you are effectively subtracting the second number from the first.įor example, take 4 + (-2). Rule 3: Adding negative numbers to positive numbers-count backwards, as if you were subtracting. You’re starting with the negative number -6.Īnd you’re adding three to that number, which means you are moving three spots to the right.Ĭlass="green-text">The answer is -3. The best way to think about this problem is to use a number line that extends to the negative numbers. Addition: Unlike adding and subtracting integers such as 2 and 8, fractions require a common denominator to undergo these operations. This would reading “negative six plus three”. Pay close attention to where the negative signs are placed in the problem.įor example: -6 + 3. ![]() Rule 2: Adding positive numbers to negative numbers-count forward the amount you’re adding. ![]() You can calculate these problems the way you always have: 3 + 2 = 5. Adding two negative numbers is easy: you're just adding two 'negative' arrows, so it's just like 'regular' addition, but in the opposite direction. Rule 1: Adding positive numbers to positive numbers-it’s just normal addition.įor example: this is what you have learned all along. This works the same way for bigger numbers (and is much simpler than trying to draw the picture): since 739 465 274, then 465 739 274. However, there are some simple rules to follow and we introduce them here. Example 4: Let’s say we had the problem 5 (-3). Thus, instead of subtracting a negative, you’re adding a positive, so you have a simple addition problem. When we add a negative number to a positive number, or two negative numbers, that can sometimes seem tricky. Rule 4: Subtracting a negative number from a positive numberwhen you see the subtraction (minus) sign followed by a negative sign, turn the two signs into a plus sign. Adding positive numbers, such as 2 + 2, is easy.
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