![]() 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. 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. Rule 1: Adding positive numbers to positive numbers-it’s just normal addition.įor example: this is what you have learned all along. However, there are some simple rules to follow and we introduce them here. When we add a negative number to a positive number, or two negative numbers, that can sometimes seem tricky. ![]() Adding positive numbers, such as 2 + 2, is easy.
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