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www.wyzant.com/resources/lessons/math/elementary_math/positive_and_negative_numbers/adding_positive_and_negative_numbers

Adding positive numbers to negative numbers can get tricky, because you need to pay close attention to where the negative signs are placed in the problem.

www.wyzant.com/resources/lessons/math/elementary_math/positive_and_negative_numbers/subtracting_positive_and_negative_numbers

Subtracting positive and negative numbers can also be tricky because there are several ... Thus, instead of subtracting a negative, you are adding a positive.

www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-sub-neg-intro/v/adding-and-subtracting-negative-number-examples

Learn how to add and subtract negative numbers. ... To have a positive or negative 0 (+0/-0) is really to have the same value, that is to say, nothing.

www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/e/adding_negative_numbers

Practice adding positive and negative single-digit numbers.

www.mathsisfun.com/positive-negative-integers.html

Adding Positive Numbers. Adding ... Here is what adding and subtracting positive numbers looks like: ... You can add weights (you are adding negative values).

www.purplemath.com/modules/negative2.htm

When you'd subtracted a positive number, you'd moved to the left. Now, if you're adding a negative, you can regard this is pretty much the same as when you ...

nrich.maths.org/5947

How can we help students make sense of addition and subtraction of negative numbers?

.ask.com/youtube?q=Adding+Positive+and+Negative+Numbers&v=iUm6S3p95fk
Jun 23, 2015 ... Adding Positive and Negative Integers ... This MATHguide video explains and demonstrates how to add integers be they negative or positive. ... Understand and Learn the Rules of Positive and Negative Numbers - Duration: ...
.ask.com/youtube?q=Adding+Positive+and+Negative+Numbers&v=UXnk9FgaS2w
Nov 12, 2012 ... This video shows how to add and subtract positive and negative numbers. More videos and information can be found at: www.

learnzillion.com/lesson_plans/5250-adding-positive-and-negative-integers-on-a-number-line

In this lesson you will learn to add positive and negative integers by using a number line.